diff --git a/code/game/objects/items/tanks/jetpack.dm b/code/game/objects/items/tanks/jetpack.dm
index 2598fc8f83c..e44b22581c8 100644
--- a/code/game/objects/items/tanks/jetpack.dm
+++ b/code/game/objects/items/tanks/jetpack.dm
@@ -56,7 +56,7 @@
 	ion_trail.start()
 	RegisterSignal(user, COMSIG_MOVABLE_MOVED, .proc/move_react)
 	if(full_speed)
-		user.add_movespeed_modifier(MOVESPEED_ID_JETPACK, priority=100, multiplicative_slowdown=-0.25, movetypes=FLOATING, conflict=MOVE_CONFLICT_JETPACK)
+		user.add_movespeed_modifier(MOVESPEED_ID_JETPACK, priority=100, multiplicative_slowdown=-0.5, movetypes=FLOATING, conflict=MOVE_CONFLICT_JETPACK)
 
 /obj/item/tank/jetpack/proc/turn_off(mob/user)
 	on = FALSE
diff --git a/code/modules/reagents/chemistry/reagents/drink_reagents.dm b/code/modules/reagents/chemistry/reagents/drink_reagents.dm
index cbf2f67b775..c032f62ed87 100644
--- a/code/modules/reagents/chemistry/reagents/drink_reagents.dm
+++ b/code/modules/reagents/chemistry/reagents/drink_reagents.dm
@@ -376,7 +376,7 @@
 
 /datum/reagent/consumable/nuka_cola/on_mob_metabolize(mob/living/L)
 	..()
-	L.add_movespeed_modifier(type, update=TRUE, priority=100, multiplicative_slowdown=-0.75, blacklisted_movetypes=(FLYING|FLOATING))
+	L.add_movespeed_modifier(type, update=TRUE, priority=100, multiplicative_slowdown=-0.5, blacklisted_movetypes=(FLYING|FLOATING))
 
 /datum/reagent/consumable/nuka_cola/on_mob_end_metabolize(mob/living/L)
 	L.remove_movespeed_modifier(type)
diff --git a/code/modules/reagents/chemistry/reagents/medicine_reagents.dm b/code/modules/reagents/chemistry/reagents/medicine_reagents.dm
index 1f095cbf525..140f0682fe5 100644
--- a/code/modules/reagents/chemistry/reagents/medicine_reagents.dm
+++ b/code/modules/reagents/chemistry/reagents/medicine_reagents.dm
@@ -422,7 +422,7 @@
 
 /datum/reagent/medicine/ephedrine/on_mob_metabolize(mob/living/L)
 	..()
-	L.add_movespeed_modifier(type, update=TRUE, priority=100, multiplicative_slowdown=-0.85, blacklisted_movetypes=(FLYING|FLOATING))
+	L.add_movespeed_modifier(type, update=TRUE, priority=100, multiplicative_slowdown=-0.55, blacklisted_movetypes=(FLYING|FLOATING))
 	ADD_TRAIT(L, TRAIT_STUNRESISTANCE, type)
 
 /datum/reagent/medicine/ephedrine/on_mob_end_metabolize(mob/living/L)
diff --git a/code/modules/reagents/chemistry/reagents/other_reagents.dm b/code/modules/reagents/chemistry/reagents/other_reagents.dm
index 3aabfa69335..e9cbfaa1a40 100644
--- a/code/modules/reagents/chemistry/reagents/other_reagents.dm
+++ b/code/modules/reagents/chemistry/reagents/other_reagents.dm
@@ -1226,7 +1226,7 @@
 
 /datum/reagent/nitryl/on_mob_metabolize(mob/living/L)
 	..()
-	L.add_movespeed_modifier(type, update=TRUE, priority=100, multiplicative_slowdown=-1, blacklisted_movetypes=(FLYING|FLOATING))
+	L.add_movespeed_modifier(type, update=TRUE, priority=100, multiplicative_slowdown=-0.6, blacklisted_movetypes=(FLYING|FLOATING))
 
 /datum/reagent/nitryl/on_mob_end_metabolize(mob/living/L)
 	L.remove_movespeed_modifier(type)
@@ -2021,4 +2021,3 @@
 	reagent_state = SOLID
 	color = "#E6E6DA"
 	taste_mult = 0
-
diff --git a/code/modules/research/xenobiology/crossbreeding/_status_effects.dm b/code/modules/research/xenobiology/crossbreeding/_status_effects.dm
index 54b17733794..be3276bbeb2 100644
--- a/code/modules/research/xenobiology/crossbreeding/_status_effects.dm
+++ b/code/modules/research/xenobiology/crossbreeding/_status_effects.dm
@@ -684,7 +684,7 @@ datum/status_effect/stabilized/blue/on_remove()
 /datum/status_effect/stabilized/sepia/tick()
 	if(prob(50) && mod > -1)
 		mod--
-		owner.add_movespeed_modifier(MOVESPEED_ID_SEPIA, override = TRUE, update=TRUE, priority=100, multiplicative_slowdown=-1, blacklisted_movetypes=(FLYING|FLOATING))
+		owner.add_movespeed_modifier(MOVESPEED_ID_SEPIA, override = TRUE, update=TRUE, priority=100, multiplicative_slowdown=-0.5, blacklisted_movetypes=(FLYING|FLOATING))
 	else if(mod < 1)
 		mod++
 		// yeah a value of 0 does nothing but replacing the trait in place is cheaper than removing and adding repeatedly
@@ -900,7 +900,7 @@ datum/status_effect/stabilized/blue/on_remove()
 	colour = "light pink"
 
 /datum/status_effect/stabilized/lightpink/on_apply()
-	owner.add_movespeed_modifier(MOVESPEED_ID_SLIME_STATUS, update=TRUE, priority=100, multiplicative_slowdown=-1, blacklisted_movetypes=(FLYING|FLOATING))
+	owner.add_movespeed_modifier(MOVESPEED_ID_SLIME_STATUS, update=TRUE, priority=100, multiplicative_slowdown=-0.5, blacklisted_movetypes=(FLYING|FLOATING))
 	return ..()
 
 /datum/status_effect/stabilized/lightpink/tick()