Not THAT Slow - Update Movespeed Modifiers for Smooth Movement (#22127)

The /tg/-style movespeed_modifier datums were not incorporated into the
original smooth movement PR. While
https://github.com/Aurorastation/Aurora.3/pull/22043 restores that
functionality, the original values no longer feel good now that we're on
smooth movement. This PR halves ALL movespeed_modifier/slowdown datums,
with the exception of species-native, as a baseline before more
individual adjustments are made.

code/modules/cargo/delivery/backpack.dm

@@ -53,7 +53,7 @@
 
 /obj/item/cargo_backpack/proc/update_state(mob/user)
 	if(LAZYLEN(contained_packages))
-		slowdown = 1
+		slowdown = 0.5
 	else
 		slowdown = 0
 	update_icon()

code/modules/cargo/delivery/package.dm

@@ -18,7 +18,7 @@
 	w_class = WEIGHT_CLASS_HUGE
 	force = 15
 
-	slowdown = 1
+	slowdown = 0.5
 
 	var/delivery_point_id = ""
 	var/datum/weakref/delivery_point_sector
@@ -83,7 +83,7 @@
 		// larger mobs, such as industrials, can hold two pieces of cargo
 		if(user.species.mob_size < 12)
 			wield(user)
-			slowdown = 2
+			slowdown = 1
 		else
 			slowdown = 0
 

code/modules/clothing/factions/trinary.dm

@@ -70,7 +70,7 @@
 		BOMB = ARMOR_BOMB_PADDED,
 	)
 	contained_sprite = TRUE
-	slowdown = 1
+	slowdown = 0.5
 	allowed = list(/obj/item/flashlight,/obj/item/tank,/obj/item/suit_cooling_unit,/obj/item/gun,/obj/item/ammo_magazine,/obj/item/ammo_casing,/obj/item/melee/baton,/obj/item/melee/energy/sword,/obj/item/handcuffs)
 
 /obj/item/clothing/mask/exclusionist

code/modules/clothing/shoes/miscellaneous.dm

@@ -12,7 +12,7 @@
 	icon_state = "flippers"
 	item_state = "flippers"
 	item_flags = ITEM_FLAG_NO_SLIP
-	slowdown = 1
+	slowdown = 0.5
 
 /obj/item/clothing/shoes/footwraps
 	name = "cloth footwraps"
@@ -64,7 +64,7 @@
 	item_state = "galoshes"
 	permeability_coefficient = 0.05
 	item_flags = ITEM_FLAG_NO_SLIP
-	slowdown = 1
+	slowdown = 0.5
 	species_restricted = null
 	icon_auto_adapt = TRUE
 	icon_supported_species_tags = list("taj")

code/modules/clothing/shoes/sneakers.dm

@@ -28,7 +28,7 @@
 
 	user.drop_from_inventory(cuffs,src)
 	src.chained = cuffs
-	src.slowdown = 15
+	src.slowdown = 7.5
 	src.icon_state = "orange1"
 	src.item_state = "orange1"
 	if(ismob(src.loc))

code/modules/clothing/spacesuits/rig/rig.dm

@@ -34,7 +34,7 @@
 	siemens_coefficient = 0.35
 	permeability_coefficient = 0.1
 	unacidable = 1
-	slowdown = 1 // All rigs by default should have slowdown.
+	slowdown = 0.5 // All rigs by default should have slowdown.
 
 	var/has_sealed_state = FALSE
 	var/has_hidden_jumpsuit = FALSE
@@ -88,7 +88,7 @@
 	var/seal_delay = SEAL_DELAY
 	var/sealing                                               // Keeps track of seal status independantly of canremove.
 	var/offline = 1                                           // Should we be applying suit maluses?
-	var/offline_slowdown = 3                                  // If the suit is deployed and unpowered, it sets slowdown to this.
+	var/offline_slowdown = 1.5                                  // If the suit is deployed and unpowered, it sets slowdown to this.
 	var/vision_restriction = TINT_NONE
 	var/offline_vision_restriction = TINT_HEAVY
 	var/airtight = 1 //If set, will adjust the ITEM_FLAG_AIRTIGHT flag on components. Otherwise it should leave them untouched.

code/modules/clothing/spacesuits/rig/suits/alien.dm

@@ -15,8 +15,8 @@
 	)
 	siemens_coefficient = 0.1
 	emp_protection = -20
-	slowdown = 6
-	offline_slowdown = 10
+	slowdown = 3
+	offline_slowdown = 5
 	vision_restriction = TINT_HEAVY
 	offline_vision_restriction = TINT_BLIND
 	boot_type =  /obj/item/clothing/shoes/magboots/rig/chonk
@@ -44,7 +44,7 @@
 	)
 	siemens_coefficient = 0.1
 	vision_restriction = TINT_NONE
-	slowdown = 4
+	slowdown = 2
 	glove_type = /obj/item/clothing/gloves/powerfist
 
 	allowed_module_types = MODULE_GENERAL | MODULE_LIGHT_COMBAT | MODULE_HEAVY_COMBAT | MODULE_SPECIAL
@@ -91,8 +91,8 @@
 	)
 	vision_restriction = TINT_NONE
 	offline_vision_restriction = TINT_BLIND
-	slowdown = 4
-	offline_slowdown = 3
+	slowdown = 2
+	offline_slowdown = 2.5
 	siemens_coefficient = 0.1
 	allowed_module_types = MODULE_GENERAL | MODULE_LIGHT_COMBAT | MODULE_HEAVY_COMBAT | MODULE_SPECIAL
 	glove_type = /obj/item/clothing/gloves/powerfist
@@ -127,8 +127,8 @@
 	)
 	siemens_coefficient = 0.1
 	vision_restriction = 0
-	slowdown = 2
-	offline_slowdown = 3
+	slowdown = 1
+	offline_slowdown = 1.5
 
 	species_restricted = list(BODYTYPE_VAURCA)
 
@@ -190,8 +190,8 @@
 	)
 	siemens_coefficient = 0
 	vision_restriction = 0
-	slowdown = 2
-	offline_slowdown = 3
+	slowdown = 1
+	offline_slowdown = 1.5
 
 	species_restricted = list(BODYTYPE_TAJARA)
 

code/modules/clothing/spacesuits/rig/suits/combat.dm

@@ -15,7 +15,7 @@
 		RAD = ARMOR_RAD_SMALL
 	)
 	siemens_coefficient = 0.1
-	offline_slowdown = 3
+	offline_slowdown = 1.5
 	offline_vision_restriction = TINT_HEAVY
 
 	helm_type = /obj/item/clothing/head/helmet/space/rig/combat
@@ -59,7 +59,7 @@
 		RAD = ARMOR_RAD_SMALL
 	)
 	siemens_coefficient = 0.1
-	offline_slowdown = 3
+	offline_slowdown = 1.5
 	offline_vision_restriction = TINT_HEAVY
 	allowed = list(/obj/item/flashlight,/obj/item/tank,/obj/item/suit_cooling_unit,/obj/item/gun,/obj/item/ammo_magazine,/obj/item/ammo_casing,/obj/item/melee/baton,/obj/item/melee/energy/sword,/obj/item/handcuffs)
 
@@ -141,7 +141,7 @@
 	)
 	emp_protection = 30
 	slowdown = 0
-	offline_slowdown = 3
+	offline_slowdown = 1.5
 
 	initial_modules = list(
 		/obj/item/rig_module/ai_container,
@@ -177,8 +177,8 @@
 		RAD = ARMOR_RAD_RESISTANT
 	)
 	siemens_coefficient = 0.35
-	slowdown = 2
-	offline_slowdown = 4
+	slowdown = 1
+	offline_slowdown = 2
 	offline_vision_restriction = TINT_HEAVY
 
 	helm_type = /obj/item/clothing/head/helmet/space/rig/tcfl
@@ -233,7 +233,7 @@
 		RAD = ARMOR_RAD_SMALL
 	)
 	siemens_coefficient = 0.1
-	offline_slowdown = 2
+	offline_slowdown = 1
 	offline_vision_restriction = TINT_HEAVY
 
 	boot_type =  /obj/item/clothing/shoes/magboots/rig/heavy
@@ -287,7 +287,7 @@
 		RAD = ARMOR_RAD_SMALL
 	)
 	siemens_coefficient = 0.1
-	offline_slowdown = 2
+	offline_slowdown = 1
 	offline_vision_restriction = TINT_HEAVY
 
 	boot_type =  /obj/item/clothing/shoes/magboots/rig/heavy
@@ -356,7 +356,7 @@
 		RAD = ARMOR_RAD_SMALL
 	)
 	siemens_coefficient = 0.1
-	offline_slowdown = 2
+	offline_slowdown = 1
 	offline_vision_restriction = TINT_HEAVY
 
 	boot_type =  /obj/item/clothing/shoes/magboots/rig/heavy
@@ -410,8 +410,8 @@
 	)
 	offline_vision_restriction = TINT_HEAVY
 	emp_protection = -30
-	slowdown = 8
-	offline_slowdown = 10
+	slowdown = 4
+	offline_slowdown = 5
 
 	allowed = list(/obj/item/flashlight,/obj/item/tank,/obj/item/suit_cooling_unit,/obj/item/gun,/obj/item/ammo_magazine,/obj/item/ammo_casing,/obj/item/melee/baton,/obj/item/melee/energy/sword,/obj/item/handcuffs)
 
@@ -455,7 +455,7 @@
 		RAD = ARMOR_RAD_SMALL
 	)
 	offline_vision_restriction = TINT_HEAVY
-	slowdown = 1
+	slowdown = 0.5
 
 	allowed = list(/obj/item/flashlight,/obj/item/tank,/obj/item/suit_cooling_unit,/obj/item/gun,/obj/item/ammo_magazine,/obj/item/ammo_casing,/obj/item/melee/baton,/obj/item/melee/energy/sword,/obj/item/handcuffs)
 
@@ -487,7 +487,7 @@
 		RAD = ARMOR_RAD_SMALL
 	)
 	offline_vision_restriction = TINT_HEAVY
-	offline_slowdown = 10
+	offline_slowdown = 5
 
 	allowed = list(/obj/item/flashlight,/obj/item/tank,/obj/item/suit_cooling_unit,/obj/item/gun,/obj/item/ammo_magazine,/obj/item/ammo_casing,/obj/item/melee/baton,/obj/item/melee/energy/sword,/obj/item/handcuffs)
 
@@ -540,8 +540,8 @@
 	helm_type = /obj/item/clothing/head/helmet/space/rig/nanotrasen
 	boot_type =  /obj/item/clothing/shoes/magboots/rig/heavy
 
-	slowdown = 1
-	offline_slowdown = 2
+	slowdown = 0.5
+	offline_slowdown = 1
 	offline_vision_restriction = TINT_HEAVY
 
 	allowed_module_types = MODULE_GENERAL | MODULE_LIGHT_COMBAT | MODULE_HEAVY_COMBAT | MODULE_SPECIAL | MODULE_MEDICAL | MODULE_UTILITY | MODULE_VAURCA
@@ -594,7 +594,7 @@
 		RAD = ARMOR_RAD_SMALL
 	)
 	siemens_coefficient = 0.1
-	offline_slowdown = 3
+	offline_slowdown = 1.5
 	offline_vision_restriction = TINT_HEAVY
 
 	helm_type = /obj/item/clothing/head/helmet/space/rig/legionnaire

code/modules/clothing/spacesuits/rig/suits/light.dm

@@ -15,7 +15,7 @@
 		BOMB = ARMOR_BOMB_PADDED
 	)
 	emp_protection = 100
-	slowdown = -0.3
+	slowdown = -0.15
 	species_restricted = list(BODYTYPE_HUMAN, BODYTYPE_UNATHI, BODYTYPE_SKRELL, BODYTYPE_VAURCA)
 	item_flags = ITEM_FLAG_THICK_MATERIAL
 	offline_slowdown = 0
@@ -329,8 +329,8 @@
 	species_restricted = list(BODYTYPE_HUMAN, BODYTYPE_UNATHI, BODYTYPE_SKRELL, BODYTYPE_VAURCA, BODYTYPE_IPC, BODYTYPE_TAJARA)
 
 	seal_delay = 3 // Its only deploying the myomers and helmet.
-	offline_slowdown = 3
-	slowdown = 1
+	offline_slowdown = 1.5
+	slowdown = 0.5
 	offline_vision_restriction = TINT_BLIND // Visorless helmet sprite, the helmet's face is just a camera.
 
 	allowed = list(/obj/item/gun,/obj/item/flashlight,/obj/item/tank,/obj/item/suit_cooling_unit,/obj/item/melee/baton)

code/modules/clothing/spacesuits/rig/suits/merc.dm

@@ -20,7 +20,7 @@
 		RAD = ARMOR_RAD_SMALL
 	)
 	siemens_coefficient = 0.1
-	offline_slowdown = 3
+	offline_slowdown = 1.5
 	offline_vision_restriction = TINT_HEAVY
 	emp_protection = 30
 
@@ -89,7 +89,7 @@
 		RAD = ARMOR_RAD_SMALL
 	)
 	siemens_coefficient = 0.1
-	offline_slowdown = 3
+	offline_slowdown = 1.5
 	offline_vision_restriction = TINT_HEAVY
 	emp_protection = 20
 

code/modules/clothing/spacesuits/rig/suits/skrell.dm

@@ -20,7 +20,7 @@
 	emp_protection = 30
 	vision_restriction = TINT_NONE
 	slowdown = 0
-	offline_slowdown = 3
+	offline_slowdown = 1.5
 	species_restricted = list(BODYTYPE_SKRELL)
 
 	helm_type = /obj/item/clothing/head/helmet/space/rig/skrell

code/modules/clothing/spacesuits/rig/suits/station.dm

@@ -85,8 +85,8 @@
 		RAD = ARMOR_RAD_RESISTANT
 	)
 	siemens_coefficient = 0.35
-	slowdown = 2
-	offline_slowdown = 7
+	slowdown = 1
+	offline_slowdown = 3.5
 	offline_vision_restriction = TINT_HEAVY
 	emp_protection = -20
 	max_pressure_protection = FIRESUIT_MAX_PRESSURE
@@ -169,7 +169,7 @@
 		RAD = ARMOR_RAD_SHIELDED
 	)
 	slowdown = 0
-	offline_slowdown = 3
+	offline_slowdown = 1.5
 	offline_vision_restriction = TINT_HEAVY
 
 	helm_type = /obj/item/clothing/head/helmet/space/rig/eva
@@ -246,7 +246,7 @@
 		RAD = ARMOR_RAD_SHIELDED
 	)
 	slowdown = 0
-	offline_slowdown = 3
+	offline_slowdown = 1.5
 	offline_vision_restriction = 0
 	max_heat_protection_temperature = FIRESUIT_MAX_HEAT_PROTECTION_TEMPERATURE / 1.5 // Good against fires, but not as good as a proper firesuit / atmos voidsuit
 	max_pressure_protection = FIRESUIT_MAX_PRESSURE
@@ -336,8 +336,8 @@
 		RAD = ARMOR_RAD_SHIELDED
 	)
 	siemens_coefficient = 0.50
-	slowdown = 1
-	offline_slowdown = 2
+	slowdown = 0.5
+	offline_slowdown = 1
 	offline_vision_restriction = TINT_HEAVY
 
 	helm_type = /obj/item/clothing/head/helmet/space/rig/medical
@@ -378,7 +378,7 @@
 		BIO = ARMOR_BIO_SHIELDED,
 		RAD = ARMOR_RAD_RESISTANT
 	)
-	offline_slowdown = 3
+	offline_slowdown = 1.5
 	offline_vision_restriction = TINT_HEAVY
 
 	helm_type = /obj/item/clothing/head/helmet/space/rig/hazard
@@ -424,8 +424,8 @@
 		BIO = ARMOR_BIO_SHIELDED,
 		RAD = ARMOR_RAD_SHIELDED
 	)
-	slowdown = 3
-	offline_slowdown = 4
+	slowdown = 1.5
+	offline_slowdown = 2
 	offline_vision_restriction = TINT_HEAVY
 	boot_type =  /obj/item/clothing/shoes/magboots/rig/chonk
 

code/modules/clothing/spacesuits/rig/suits/terminator.dm

@@ -15,7 +15,7 @@
 		RAD = ARMOR_RAD_RESISTANT
 	)
 	siemens_coefficient = 0 // Ok this is the only exception. Got it? Good.
-	offline_slowdown = 3
+	offline_slowdown = 1.5
 	offline_vision_restriction = TINT_HEAVY
 	has_sealed_state = TRUE
 

code/modules/clothing/spacesuits/rig/suits/xanu.dm

@@ -22,7 +22,7 @@
 	allowed_module_types = MODULE_GENERAL | MODULE_LIGHT_COMBAT | MODULE_HEAVY_COMBAT | MODULE_SPECIAL | MODULE_MEDICAL | MODULE_UTILITY
 
 	siemens_coefficient = 0.2
-	offline_slowdown = 2
+	offline_slowdown = 1
 	offline_vision_restriction = TINT_HEAVY
 
 	species_restricted = list(BODYTYPE_HUMAN, BODYTYPE_IPC, BODYTYPE_IPC_BISHOP, BODYTYPE_IPC_ZENGHU)
@@ -69,7 +69,7 @@
 		RAD = ARMOR_RAD_MINOR
 	)
 	slowdown = 0
-	offline_slowdown = 1
+	offline_slowdown = 0.5
 
 	allowed_module_types = MODULE_GENERAL | MODULE_UTILITY
 

code/modules/clothing/spacesuits/spacesuits.dm

@@ -52,7 +52,7 @@
 	item_flags = ITEM_FLAG_THICK_MATERIAL|ITEM_FLAG_INJECTION_PORT
 	body_parts_covered = UPPER_TORSO|LOWER_TORSO|LEGS|FEET|ARMS|HANDS
 	allowed = list(/obj/item/flashlight, /obj/item/tank/emergency_oxygen, /obj/item/suit_cooling_unit, /obj/item/tank)
-	slowdown = 1
+	slowdown = 0.4
 	armor = list(
 		BIO = ARMOR_BIO_SHIELDED,
 		RAD = ARMOR_RAD_SMALL
@@ -122,7 +122,7 @@
 	icon_state = "softsuit_emergency"
 	item_state = "softsuit_emergency"
 	contained_sprite = TRUE
-	slowdown = 2
+	slowdown = 1
 
 /obj/item/clothing/suit/space/emergency/marooning_equipment
 	name = "marooning softsuit"

code/modules/clothing/spacesuits/syndi.dm

@@ -26,7 +26,7 @@
 	desc = "A crimson spacesuit sporting clean lines and durable plating. Robust, reliable, and slightly suspicious."
 	w_class = WEIGHT_CLASS_NORMAL
 	allowed = list(/obj/item/gun,/obj/item/ammo_magazine,/obj/item/ammo_casing,/obj/item/melee/baton,/obj/item/melee/energy/sword,/obj/item/handcuffs,/obj/item/tank/emergency_oxygen)
-	slowdown = 1
+	slowdown = 0.5
 	armor = list(
 		MELEE = ARMOR_MELEE_MAJOR,
 		BULLET = ARMOR_BALLISTIC_MEDIUM,

code/modules/clothing/spacesuits/void/alien/unathi.dm

@@ -25,7 +25,7 @@
 	icon_state = "kataphract"
 	item_state = "kataphract"
 	contained_sprite = TRUE
-	slowdown = 1
+	slowdown = 0.5
 	w_class = WEIGHT_CLASS_NORMAL
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,

code/modules/clothing/spacesuits/void/merc.dm

@@ -32,7 +32,7 @@
 	item_state = "syndie"
 	contained_sprite = TRUE
 	icon_supported_species_tags = list("skr", "taj", "una", "ipc")
-	slowdown = 1
+	slowdown = 0.5
 	w_class = WEIGHT_CLASS_NORMAL
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,

code/modules/clothing/spacesuits/void/misc.dm

@@ -36,7 +36,7 @@
 		BIO = ARMOR_BIO_SHIELDED,
 		RAD = ARMOR_RAD_SMALL
 	)
-	slowdown = 1
+	slowdown = 0.5
 	allowed = list(/obj/item/flashlight,/obj/item/tank,/obj/item/suit_cooling_unit,/obj/item/gun,/obj/item/ammo_magazine,/obj/item/ammo_casing,/obj/item/melee/baton,/obj/item/melee/energy/sword,/obj/item/handcuffs)
 	siemens_coefficient = 0.35
 	species_restricted = list(BODYTYPE_HUMAN)
@@ -75,7 +75,7 @@
 	icon_state = "vulture"
 	item_state = "vulture"
 	contained_sprite = TRUE
-	slowdown = 1
+	slowdown = 0.5
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,
 		BULLET = ARMOR_BALLISTIC_MEDIUM,
@@ -110,7 +110,7 @@
 	icon_state = "xanu_voidsuit"
 	item_state = "xanu_voidsuit"
 	contained_sprite = TRUE
-	slowdown = 1
+	slowdown = 0.5
 	allowed = list(/obj/item/flashlight,/obj/item/tank,/obj/item/suit_cooling_unit,/obj/item/gun,/obj/item/ammo_magazine,/obj/item/ammo_casing,/obj/item/melee/baton,/obj/item/melee/energy/sword,/obj/item/handcuffs)
 	siemens_coefficient = 0.35
 	species_restricted = list(BODYTYPE_HUMAN)
@@ -203,7 +203,7 @@
 		BIO = ARMOR_BIO_SHIELDED,
 		RAD = ARMOR_RAD_SMALL
 	)
-	slowdown = 1
+	slowdown = 0.5
 	allowed = list(/obj/item/tank,/obj/item/flashlight,/obj/item/suit_cooling_unit,/obj/item/gun,/obj/item/ammo_magazine,/obj/item/ammo_casing,/obj/item/melee/baton,/obj/item/melee/energy/sword,/obj/item/handcuffs)
 	siemens_coefficient = 0.35
 	species_restricted = list(BODYTYPE_HUMAN)
@@ -239,7 +239,7 @@
 	item_state = "valkyrie"
 	icon = 'icons/obj/clothing/voidsuit/elyra.dmi'
 	contained_sprite = TRUE
-	slowdown = 1
+	slowdown = 0.5
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,
 		BULLET = ARMOR_BALLISTIC_MEDIUM,
@@ -289,7 +289,7 @@
 	item_state = "lancer"
 	icon_supported_species_tags = list("una")
 	contained_sprite = TRUE
-	slowdown = 1
+	slowdown = 0.65
 	w_class = WEIGHT_CLASS_NORMAL
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,
@@ -344,7 +344,7 @@
 	item_state = "banshee"
 	contained_sprite = 1
 
-	slowdown = 1
+	slowdown = 0.1
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,
 		BULLET = ARMOR_BALLISTIC_MEDIUM,
@@ -396,7 +396,7 @@
 	item_state = "dragon"
 	contained_sprite = 1
 
-	slowdown = 1
+	slowdown = 0.25
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,
 		BULLET = ARMOR_BALLISTIC_MEDIUM,
@@ -448,7 +448,7 @@
 	item_state = "caiman"
 	contained_sprite = 1
 
-	slowdown = 1
+	slowdown = 0.75
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,
 		BULLET = ARMOR_BALLISTIC_MEDIUM,
@@ -508,7 +508,7 @@
 		BIO = ARMOR_BIO_SHIELDED,
 		RAD = ARMOR_RAD_SMALL
 	)
-	slowdown = 1
+	slowdown = 0.3
 	allowed = list(/obj/item/flashlight,/obj/item/tank,/obj/item/suit_cooling_unit,/obj/item/gun,/obj/item/ammo_magazine,/obj/item/ammo_casing,/obj/item/melee/baton,/obj/item/melee/energy/sword,/obj/item/handcuffs)
 	siemens_coefficient = 0.35
 	species_restricted = list(BODYTYPE_HUMAN)
@@ -547,7 +547,7 @@
 	item_state = "freelancer"
 	contained_sprite = TRUE
 	icon_supported_species_tags = list("skr", "taj", "una", "ipc")
-	slowdown = 1
+	slowdown = 0.5
 	w_class = WEIGHT_CLASS_NORMAL
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,
@@ -601,7 +601,7 @@
 	icon_state = "dvoidsuit"
 	item_state = "dvoidsuit"
 	contained_sprite = 1
-	slowdown = 1
+	slowdown = 0.5
 
 	w_class = WEIGHT_CLASS_NORMAL
 	armor = list(
@@ -657,7 +657,7 @@
 	icon_state = "goldsuit"
 	item_state = "goldsuit"
 	contained_sprite = 1
-	slowdown = 1
+	slowdown = 1.0
 
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,
@@ -1068,7 +1068,7 @@
 		BIO = ARMOR_BIO_SHIELDED,
 		RAD = ARMOR_RAD_SMALL
 	)
-	slowdown = 1
+	slowdown = 0.5
 	allowed = list(/obj/item/flashlight,/obj/item/tank,/obj/item/suit_cooling_unit,/obj/item/gun,/obj/item/ammo_magazine,/obj/item/ammo_casing,/obj/item/melee/baton,/obj/item/melee/energy/sword,/obj/item/handcuffs)
 	siemens_coefficient = 0.35
 	species_restricted = list(BODYTYPE_HUMAN, BODYTYPE_SKRELL)

code/modules/clothing/spacesuits/void/station.dm

@@ -38,7 +38,7 @@
 	)
 	contained_sprite = TRUE
 	icon_supported_species_tags = list("skr", "taj", "una", "ipc", "vau")
-	slowdown = 1
+	slowdown = 0.3
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,
 		BULLET = ARMOR_BALLISTIC_MINOR,

code/modules/clothing/spacesuits/void/void.dm

@@ -43,7 +43,7 @@
 	icon_state = "void"
 	item_state = "void"
 	desc = "A high-tech dark red space suit. Used for AI satellite maintenance."
-	slowdown = 1
+	slowdown = 0.5
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,
 		BULLET = ARMOR_BALLISTIC_MINOR,

code/modules/clothing/suits/armor.dm

@@ -110,7 +110,7 @@
 	item_flags = ITEM_FLAG_THICK_MATERIAL
 	body_parts_covered = UPPER_TORSO|LOWER_TORSO|LEGS|FEET|ARMS
 	allowed = list(/obj/item/gun,/obj/item/ammo_magazine,/obj/item/ammo_casing,/obj/item/melee/baton,/obj/item/handcuffs,/obj/item/tank/emergency_oxygen)
-	slowdown = 1
+	slowdown = 0.5
 	armor = list(
 		MELEE = ARMOR_MELEE_RESISTANT,
 		BULLET = ARMOR_BALLISTIC_MEDIUM,
@@ -147,7 +147,7 @@
 	icon_state = "reactiveoff"
 	item_state = "reactiveoff"
 	blood_overlay_type = "armor"
-	slowdown = 1
+	slowdown = 0.5
 	armor = null
 
 /obj/item/clothing/suit/armor/reactive/handle_shield(mob/user, var/on_back, var/damage, atom/damage_source = null, mob/attacker = null, var/def_zone = null, var/attack_text = "the attack")
@@ -198,7 +198,7 @@
 	item_state = "armor"
 	var/obj/item/gun/holstered = null
 	body_parts_covered = UPPER_TORSO|LOWER_TORSO|LEGS|ARMS
-	slowdown = 1
+	slowdown = 0.5
 	armor = list(
 		MELEE = ARMOR_MELEE_KNIVES,
 		BULLET = ARMOR_BALLISTIC_MEDIUM,
@@ -608,7 +608,7 @@
 	w_class = WEIGHT_CLASS_BULKY//bulky item
 	gas_transfer_coefficient = 0.90
 	body_parts_covered = UPPER_TORSO|LOWER_TORSO|LEGS|FEET|ARMS|HANDS
-	slowdown = 3
+	slowdown = 1.5
 	flags_inv = HIDEWRISTS|HIDEGLOVES|HIDESHOES|HIDEJUMPSUIT
 	siemens_coefficient = 0.1
 	pocket_slots = 3

code/modules/clothing/suits/modular_armor.dm

@@ -192,7 +192,7 @@
 		ENERGY = ARMOR_ENERGY_MINOR,
 		BOMB = ARMOR_BOMB_PADDED
 	)
-	slowdown = 0.4
+	slowdown = 0.2
 
 /obj/item/clothing/accessory/armor_plate/riot
 	name = "riot armor plate"
@@ -206,7 +206,7 @@
 		ENERGY = ARMOR_ENERGY_MINOR,
 		BOMB = ARMOR_BOMB_PADDED
 	)
-	slowdown = 0.4
+	slowdown = 0.2
 
 /obj/item/clothing/accessory/armor_plate/ablative
 	name = "ablative armor plate"
@@ -219,7 +219,7 @@
 		LASER = ARMOR_LASER_MAJOR,
 		ENERGY = ARMOR_ENERGY_RESISTANT
 	)
-	slowdown = 0.4
+	slowdown = 0.2
 	siemens_coefficient = 0
 
 /obj/item/clothing/accessory/armor_plate/military
@@ -234,7 +234,7 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.4
+	slowdown = 0.2
 
 /obj/item/clothing/accessory/armor_plate/heavy
 	name = "heavy armor plate"
@@ -248,14 +248,14 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.4
+	slowdown = 0.2
 
 /obj/item/clothing/accessory/armor_plate/heavy/scc
 	name = "heavy SCC armor plate"
 	desc = "A heavy and nondescript armor plate. You really get the idea they wanted these mooks to be unfeeling."
 	icon_state = "plate_blue"
 	item_state = "plate_blue"
-	slowdown = 0.4
+	slowdown = 0.2
 
 /obj/item/clothing/accessory/armor_plate/heavy/dominia
 	name = "imperial army steel body armor"
@@ -287,7 +287,7 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.4
+	slowdown = 0.2
 
 /obj/item/clothing/accessory/armor_plate/tcaf/tcaf_light
 	name = "\improper TCAF legionnaire light carapace"
@@ -370,7 +370,7 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED
 	)
-	slowdown = 0.4
+	slowdown = 0.2
 
 /obj/item/clothing/head/helmet/security
 	name = "corporate helmet"

code/modules/clothing/suits/utility.dm

@@ -100,7 +100,7 @@
 	w_class = WEIGHT_CLASS_HUGE //bulky item
 	gas_transfer_coefficient = 0.01
 	permeability_coefficient = 0.01
-	slowdown = 8
+	slowdown = 4
 	armor = list(
 		MELEE = ARMOR_MELEE_VERY_HIGH,
 		BULLET = ARMOR_BALLISTIC_MINOR,
@@ -233,7 +233,7 @@
 	permeability_coefficient = 0.50
 	body_parts_covered = UPPER_TORSO|LOWER_TORSO|LEGS|ARMS|HANDS|FEET
 	allowed = list(/obj/item/flashlight,/obj/item/tank,/obj/item/suit_cooling_unit,/obj/item/storage/bag/inflatable,/obj/item/t_scanner,/obj/item/rfd/construction,/obj/item/material/twohanded/fireaxe,/obj/item/storage/backpack/cell,/obj/item/clothing/head/radiation,/obj/item/clothing/mask/gas,/obj/item/reagent_containers/hypospray/autoinjector)
-	slowdown = 1.5
+	slowdown = 0.75
 	armor = list(
 		BIO = ARMOR_BIO_RESISTANT,
 		RAD = ARMOR_RAD_SHIELDED

code/modules/clothing/under/accessories/armor.dm

@@ -53,7 +53,7 @@
 		LASER = ARMOR_LASER_MAJOR,
 		ENERGY = ARMOR_ENERGY_RESISTANT
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 	siemens_coefficient = 0
 
 /obj/item/clothing/accessory/leg_guard/ballistic
@@ -68,7 +68,7 @@
 		ENERGY = ARMOR_ENERGY_MINOR,
 		BOMB = ARMOR_BOMB_PADDED
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 
 /obj/item/clothing/accessory/leg_guard/riot
 	name = "riot leg guards"
@@ -82,7 +82,7 @@
 		ENERGY = ARMOR_ENERGY_MINOR,
 		BOMB = ARMOR_BOMB_PADDED
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 
 /obj/item/clothing/accessory/leg_guard/military
 	name = "sol army leg guards"
@@ -96,7 +96,7 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 
 /obj/item/clothing/accessory/leg_guard/heavy
 	name = "heavy leg guards"
@@ -110,13 +110,13 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 
 /obj/item/clothing/accessory/leg_guard/heavy/scc
 	name = "heavy SCC leg guards"
 	icon_state = "legguards_blue"
 	item_state = "legguards_blue"
-	slowdown = 0.3
+	slowdown = 0.15
 
 /obj/item/clothing/accessory/leg_guard/heavy/sec
 	name = "heavy corporate leg guards"
@@ -129,7 +129,7 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 
 /obj/item/clothing/accessory/leg_guard/tcaf
 	name = "\improper TCAF legionnaire leg carapace"
@@ -145,7 +145,7 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 
 /obj/item/clothing/accessory/leg_guard/konyang_navy
 	name = "\improper Konyang navy leg guards"
@@ -158,7 +158,7 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 
 /obj/item/clothing/accessory/leg_guard/hoplan
 	name = "hoplan thigh protector"
@@ -175,7 +175,7 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 
 /obj/item/clothing/accessory/leg_guard/hoplan/skirt
 	name = "hoplan ballistic skirt"
@@ -184,7 +184,7 @@
 	icon_state = "hoplan_ballistic_skirt"
 	item_state = "hoplan_ballistic_skirt"
 	contained_sprite = TRUE
-	slowdown = 0.3
+	slowdown = 0.15
 
 //Arm guards.
 /obj/item/clothing/accessory/arm_guard
@@ -237,7 +237,7 @@
 		LASER = ARMOR_LASER_MAJOR,
 		ENERGY = ARMOR_ENERGY_RESISTANT
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 	siemens_coefficient = 0
 
 /obj/item/clothing/accessory/arm_guard/ballistic
@@ -252,7 +252,7 @@
 		ENERGY = ARMOR_ENERGY_MINOR,
 		BOMB = ARMOR_BOMB_PADDED
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 
 /obj/item/clothing/accessory/arm_guard/riot
 	name = "riot arm guards"
@@ -266,7 +266,7 @@
 		ENERGY = ARMOR_ENERGY_MINOR,
 		BOMB = ARMOR_BOMB_PADDED
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 	body_parts_covered = ARMS|HANDS
 
 /obj/item/clothing/accessory/arm_guard/military
@@ -281,7 +281,7 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 	body_parts_covered = ARMS|HANDS
 
 /obj/item/clothing/accessory/arm_guard/heavy
@@ -296,14 +296,14 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 
 /obj/item/clothing/accessory/arm_guard/heavy/scc
 	name = "heavy SCC arm guards"
 	desc = "A pair of armored arm and hand pads reinforced with heavy armor plating. Attaches to a plate carrier."
 	icon_state = "armguards_blue"
 	item_state = "armguards_blue"
-	slowdown = 0.3
+	slowdown = 0.15
 	body_parts_covered = ARMS|HANDS
 
 /obj/item/clothing/accessory/arm_guard/heavy/sec
@@ -317,7 +317,7 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 
 /obj/item/clothing/accessory/arm_guard/kala
 	name = "kala arm guards"
@@ -346,7 +346,7 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.3
+	slowdown = 0.15
 	body_parts_covered = ARMS|HANDS
 
 /obj/item/clothing/accessory/arm_guard/tcaf/tcaf_stripe
@@ -369,4 +369,4 @@
 		ENERGY = ARMOR_ENERGY_SMALL,
 		BOMB = ARMOR_BOMB_PADDED,
 	)
-	slowdown = 0.3
+	slowdown = 0.15

code/modules/mob/living/carbon/human/diona_gestalt.dm

@@ -399,7 +399,7 @@ Slows you down while being used, and will be automatically retracted if both fee
 
 /// Movespeed modifier used in the root_to_ground proc. This determines how much the ability slows you down by.
 /datum/movespeed_modifier/root_to_ground
-	multiplicative_slowdown = 1.5
+	multiplicative_slowdown = 0.375
 
 /// Engages Diona magboot roots.
 /mob/living/carbon/human/proc/root_enable()

code/modules/movespeed/modifiers/mobs.dm

@@ -7,7 +7,7 @@
 /datum/movespeed_modifier/equipment_speedmod/immutable
 
 /datum/movespeed_modifier/config_walk_run
-	multiplicative_slowdown = 1
+	multiplicative_slowdown = 0.5
 	id = MOVESPEED_ID_MOB_WALK_RUN
 	flags = IGNORE_NOSLOW
 
@@ -26,7 +26,7 @@
 	flags = IGNORE_NOSLOW
 
 /datum/movespeed_modifier/encumbered
-	multiplicative_slowdown = 2
+	multiplicative_slowdown = 1
 	id = "encumbered"
 
 /datum/movespeed_modifier/zoomzoomkitty

code/modules/movespeed/modifiers/reagents.dm

@@ -1,43 +1,69 @@
 ABSTRACT_TYPE(/datum/movespeed_modifier/reagent)
 	blacklisted_movetypes = (FLYING|FLOATING)
 
+// These movespeed_modifiers are derived from metabolizing reagents, and if stacked can cause characters to move faster than ghosts
+// For all reagents which increase movespeed, we give them the id 'reagent_speedup' and a priority correlating with their mutliplicative slowdown.
+// This ensures that if a player ingests multiple reagents which increase movement speed, only the greatest movespeed bonus will apply.
+// While we could do some fancy shit with weighting for multiple speedup reagents, it is best to keep this behavior simple for gameplay.
+
 //Depends on the amount of caffeine in the drink
 /datum/movespeed_modifier/reagent/caffeine
+	id = "reagent_speedup"
 	variable = TRUE
 
 /datum/movespeed_modifier/reagent/hyperzine
-	multiplicative_slowdown = -1
-
-/datum/movespeed_modifier/reagent/stimm
-	multiplicative_slowdown = -1.5
-
-/datum/movespeed_modifier/reagent/skrell_nootropic
+	id = "reagent_speedup"
+	priority = 50
 	multiplicative_slowdown = -0.5
 
+/datum/movespeed_modifier/reagent/stimm
+	id = "reagent_speedup"
+	priority = 75
+	multiplicative_slowdown = -0.75
+
+/datum/movespeed_modifier/reagent/skrell_nootropic
+	id = "reagent_speedup"
+	priority = 25
+	multiplicative_slowdown = -0.25
+
 /datum/movespeed_modifier/reagent/dionae_stimulant
-	multiplicative_slowdown = -1
+	id = "reagent_speedup"
+	priority = 50
+	multiplicative_slowdown = -0.5
 
 /datum/movespeed_modifier/reagent/kokoreed
-	multiplicative_slowdown = -1
+	id = "reagent_speedup"
+	priority = 50
+	multiplicative_slowdown = -0.5
 
 /datum/movespeed_modifier/reagent/kilosemine
-	multiplicative_slowdown = -1
+	id = "reagent_speedup"
+	priority = 50
+	multiplicative_slowdown = -0.5
 
 ABSTRACT_TYPE(/datum/movespeed_modifier/reagent/zorasoda)
 
 /datum/movespeed_modifier/reagent/zorasoda/drone
-	multiplicative_slowdown = -1
+	id = "reagent_speedup"
+	priority = 50
+	multiplicative_slowdown = -0.5
 
 
 ABSTRACT_TYPE(/datum/movespeed_modifier/alcohol)
 
+
 ///This is ONLY for the intoxication management of alcohol, NOT for anything else
 ///if you're not using it in `code\modules\mob\living\carbon\human\intoxication.dm`, you're doing it wrong
+/// As of the introduction of removing stacking reagent movespeed modifiers, both alcohol AND any non-alcohol 'slowdown' chems should use the same id
+/// and priority system as used in 'speedup' chems.
 /datum/movespeed_modifier/alcohol/intoxication
-	multiplicative_slowdown = 2
+	id = "reagent_slowdown"
+	priority = 50
+	multiplicative_slowdown = 0.3
 	variable = TRUE
 
 //Only speed boost for unathi
 /datum/movespeed_modifier/alcohol/butanol
+	id = "reagent_slowdown"
 	multiplicative_slowdown = 0
 	variable = TRUE

code/modules/movespeed/modifiers/spells.dm

@@ -3,4 +3,4 @@ ABSTRACT_TYPE(/datum/movespeed_modifier/spell)
 ABSTRACT_TYPE(/datum/movespeed_modifier/spell/technomancer)
 
 /datum/movespeed_modifier/spell/technomancer/haste
-	multiplicative_slowdown = -0.8
+	multiplicative_slowdown = -0.4

code/modules/movespeed/modifiers/synthetics.dm

@@ -1,9 +1,9 @@
 /datum/movespeed_modifier/synth_emp
 	id = "synthemp"
 	variable = TRUE
-	multiplicative_slowdown = 1
+	multiplicative_slowdown = 0.5
 
 /datum/movespeed_modifier/endoskeleton
 	id = "synthendoskeleton"
 	variable = TRUE
-	multiplicative_slowdown = 1
+	multiplicative_slowdown = 0.5

code/modules/organs/internal/species/machine/posibrain.dm

@@ -303,13 +303,13 @@
 		if(2)
 			to_chat(owner, FONT_LARGE(SPAN_DANGER("The electromagnetic current overloads your hydraulics!")))
 			owner.Stun(2)
-			owner.add_or_update_variable_movespeed_modifier(/datum/movespeed_modifier/synth_emp, multiplicative_slowdown = 2)
+			owner.add_or_update_variable_movespeed_modifier(/datum/movespeed_modifier/synth_emp, multiplicative_slowdown = 1)
 			medium_integrity_damage(50)
 			shake_camera(owner, 0.5 SECONDS, 3)
 		if(3)
 			to_chat(owner, FONT_LARGE(SPAN_MACHINE_WARNING("Your positronic circuits error and break under the electromagnetic current!")))
 			owner.Weaken(3)
-			owner.add_or_update_variable_movespeed_modifier(/datum/movespeed_modifier/synth_emp, multiplicative_slowdown = 3)
+			owner.add_or_update_variable_movespeed_modifier(/datum/movespeed_modifier/synth_emp, multiplicative_slowdown = 1.5)
 			high_integrity_damage(25)
 			shake_camera(owner, 1 SECONDS, 5)
 

code/modules/overmap/ship_weaponry/_ship_ammunition.dm

@@ -4,7 +4,7 @@
 	icon = 'icons/obj/projectiles.dmi'
 	icon_state = "nuke"
 	w_class = WEIGHT_CLASS_HUGE
-	slowdown = 2
+	slowdown = 1
 	drop_sound = 'sound/items/drop/shell_drop.ogg'
 	var/projectile_type_override //Override projectile type fired by the gun. This is because certain guns don't use ammo (the Leviathan) but with some we want the ammo to matter.
 	var/overmap_projectile_type_override //Override projectile type on the overmap, fired by the gun. Like the Grauwolf Probe.

code/modules/overmap/ship_weaponry/weaponry/longbow_ammo.dm

@@ -126,7 +126,7 @@
 	warhead_state = "high_ex"
 	caliber = SHIP_CALIBER_406MM
 	warhead_type = SHIP_AMMO_IMPACT_HE
-	slowdown = 2
+	slowdown = 1
 	var/drop_counter = 0
 	var/cookoff_devastation = 0
 	var/cookoff_heavy = 3