diff --git a/auxmos.dll b/auxmos.dll
index fecbcad8d3..3f84be97c2 100644
Binary files a/auxmos.dll and b/auxmos.dll differ
diff --git a/auxmos.pdb b/auxmos.pdb
index 6120488259..8ff48b20e0 100644
Binary files a/auxmos.pdb and b/auxmos.pdb differ
diff --git a/code/__DEFINES/_tick.dm b/code/__DEFINES/_tick.dm
index 6fd22affd1..eee7000883 100644
--- a/code/__DEFINES/_tick.dm
+++ b/code/__DEFINES/_tick.dm
@@ -1,7 +1,7 @@
 /// Percentage of tick to leave for master controller to run
 #define MAPTICK_MC_MIN_RESERVE 70
 /// internal_tick_usage is updated every tick by extools
-#define MAPTICK_LAST_INTERNAL_TICK_USAGE ((world.map_cpu / world.tick_lag) * 100)
+#define MAPTICK_LAST_INTERNAL_TICK_USAGE world.map_cpu
 /// Tick limit while running normally
 #define TICK_BYOND_RESERVE 2
 #define TICK_LIMIT_RUNNING (max(100 - TICK_BYOND_RESERVE - MAPTICK_LAST_INTERNAL_TICK_USAGE, MAPTICK_MC_MIN_RESERVE))
diff --git a/code/controllers/subsystem/air.dm b/code/controllers/subsystem/air.dm
index b844e9dbd9..f7775910b6 100644
--- a/code/controllers/subsystem/air.dm
+++ b/code/controllers/subsystem/air.dm
@@ -22,6 +22,7 @@ SUBSYSTEM_DEF(air)
 	var/list/networks = list()
 	var/list/pipenets_needing_rebuilt = list()
 	var/list/deferred_airs = list()
+	var/max_deferred_airs = 0
 	var/list/obj/machinery/atmos_machinery = list()
 	var/list/obj/machinery/atmos_air_machinery = list()
 	var/list/pipe_init_dirs_cache = list()
@@ -70,6 +71,7 @@ SUBSYSTEM_DEF(air)
 	msg += "HS:[hotspots.len]|"
 	msg += "PN:[networks.len]|"
 	msg += "HP:[high_pressure_delta.len]|"
+	msg += "DF:[max_deferred_airs]"
 	msg += "GA:[get_amt_gas_mixes()]|"
 	msg += "MG:[get_max_gas_mixes()]|"
 	return ..()
@@ -80,10 +82,12 @@ SUBSYSTEM_DEF(air)
 	setup_atmos_machinery()
 	setup_pipenets()
 	gas_reactions = init_gas_reactions()
+	auxtools_update_reactions()
 	return ..()
 
 /datum/controller/subsystem/air/proc/extools_update_ssair()
-//datum/controller/subsystem/air/proc/extools_update_reactions()
+
+/datum/controller/subsystem/air/proc/auxtools_update_reactions()
 
 /datum/controller/subsystem/air/proc/thread_running()
 	return FALSE
@@ -233,6 +237,7 @@ SUBSYSTEM_DEF(air)
 		pipenets_needing_rebuilt += atmos_machine
 
 /datum/controller/subsystem/air/proc/process_deferred_airs(resumed = 0)
+	max_deferred_airs = max(deferred_airs.len,max_deferred_airs)
 	while(deferred_airs.len)
 		var/list/cur_op = deferred_airs[deferred_airs.len]
 		deferred_airs.len--
diff --git a/code/datums/elements/mob_holder.dm b/code/datums/elements/mob_holder.dm
index 619f674969..77b71e2efe 100644
--- a/code/datums/elements/mob_holder.dm
+++ b/code/datums/elements/mob_holder.dm
@@ -182,10 +182,21 @@
 /obj/item/clothing/head/mob_holder/remove_air(amount)
 	var/atom/location = loc
 	if(!loc)
-		return //null
+		return null
 	var/turf/T = get_turf(loc)
 	while(location != T)
 		location = location.loc
 		if(ismob(location))
 			return location.loc.remove_air(amount)
 	return location.remove_air(amount)
+
+/obj/item/clothing/head/mob_holder/remove_air_ratio(ratio)
+	var/atom/location = loc
+	if(!loc)
+		return null
+	var/turf/T = get_turf(loc)
+	while(location != T)
+		location = location.loc
+		if(ismob(location))
+			return location.loc.remove_air_ratio(ratio)
+	return location.remove_air_ratio(ratio)
diff --git a/code/game/atoms.dm b/code/game/atoms.dm
index f949b48a87..5c70219e27 100644
--- a/code/game/atoms.dm
+++ b/code/game/atoms.dm
@@ -376,6 +376,9 @@
 /atom/proc/remove_air(amount)
 	return null
 
+/atom/proc/remove_air_ratio(ratio)
+	return null
+
 /atom/proc/return_air()
 	if(loc)
 		return loc.return_air()
diff --git a/code/game/mecha/mecha.dm b/code/game/mecha/mecha.dm
index e325ab96a4..7582a029d2 100644
--- a/code/game/mecha/mecha.dm
+++ b/code/game/mecha/mecha.dm
@@ -810,6 +810,11 @@
 		return cabin_air.remove(amount)
 	return ..()
 
+/obj/mecha/remove_air_ratio(ratio)
+	if(use_internal_tank)
+		return cabin_air.remove_ratio(ratio)
+	return ..()
+
 /obj/mecha/return_air()
 	if(use_internal_tank)
 		return cabin_air
diff --git a/code/game/objects/items/tanks/tanks.dm b/code/game/objects/items/tanks/tanks.dm
index 5d0b3fbe4c..01afa9fd66 100644
--- a/code/game/objects/items/tanks/tanks.dm
+++ b/code/game/objects/items/tanks/tanks.dm
@@ -234,6 +234,9 @@
 /obj/item/tank/remove_air(amount)
 	return air_contents.remove(amount)
 
+/obj/item/tank/remove_air_ratio(ratio)
+	return air_contents.remove_ratio(ratio)
+
 /obj/item/tank/return_air()
 	return air_contents
 
diff --git a/code/game/objects/objs.dm b/code/game/objects/objs.dm
index dcd67bf1f2..882721ba95 100644
--- a/code/game/objects/objs.dm
+++ b/code/game/objects/objs.dm
@@ -102,6 +102,12 @@
 	else
 		return null
 
+/obj/remove_air_ratio(ratio)
+	if(loc)
+		return loc.remove_air_ratio(ratio)
+	else
+		return null
+
 /obj/return_air()
 	if(loc)
 		return loc.return_air()
@@ -116,8 +122,7 @@
 
 	if(breath_request>0)
 		var/datum/gas_mixture/environment = return_air()
-		var/breath_percentage = BREATH_VOLUME / environment.return_volume()
-		return remove_air(environment.total_moles() * breath_percentage)
+		return remove_air_ratio(BREATH_VOLUME / environment.return_volume())
 	else
 		return null
 
diff --git a/code/game/objects/structures/transit_tubes/transit_tube_pod.dm b/code/game/objects/structures/transit_tubes/transit_tube_pod.dm
index 89b03a8d78..1de0cdb66c 100644
--- a/code/game/objects/structures/transit_tubes/transit_tube_pod.dm
+++ b/code/game/objects/structures/transit_tubes/transit_tube_pod.dm
@@ -156,6 +156,9 @@
 /obj/structure/transit_tube_pod/remove_air(amount)
 	return air_contents.remove(amount)
 
+/obj/structure/transit_tube_pod/remove_air_ratio(ratio)
+	return air_contents.remove_ratio(ratio)
+
 /obj/structure/transit_tube_pod/relaymove(mob/mob, direction)
 	if(istype(mob) && mob.client)
 		if(!moving)
diff --git a/code/game/turfs/space/space.dm b/code/game/turfs/space/space.dm
index dd6bf0e1c8..f325428af9 100644
--- a/code/game/turfs/space/space.dm
+++ b/code/game/turfs/space/space.dm
@@ -100,6 +100,9 @@
 /turf/open/space/remove_air(amount)
 	return null
 
+/turf/open/space/remove_air_ratio(amount)
+	return null
+
 /turf/open/space/proc/update_starlight()
 	if(CONFIG_GET(flag/starlight))
 		for(var/t in RANGE_TURFS(1,src)) //RANGE_TURFS is in code\__HELPERS\game.dm
diff --git a/code/modules/atmospherics/environmental/LINDA_turf_tile.dm b/code/modules/atmospherics/environmental/LINDA_turf_tile.dm
index e25a7ddd30..43884aa3bc 100644
--- a/code/modules/atmospherics/environmental/LINDA_turf_tile.dm
+++ b/code/modules/atmospherics/environmental/LINDA_turf_tile.dm
@@ -61,6 +61,12 @@
 	update_visuals()
 	return removed
 
+/turf/open/remove_air_ratio(ratio)
+	var/datum/gas_mixture/ours = return_air()
+	var/datum/gas_mixture/removed = ours.remove_ratio(ratio)
+	update_visuals()
+	return removed
+
 /turf/open/proc/copy_air_with_tile(turf/open/T)
 	if(istype(T))
 		air.copy_from(T.air)
diff --git a/code/modules/atmospherics/gasmixtures/reactions.dm b/code/modules/atmospherics/gasmixtures/reactions.dm
index 5f425d87ff..1765a9ed9d 100644
--- a/code/modules/atmospherics/gasmixtures/reactions.dm
+++ b/code/modules/atmospherics/gasmixtures/reactions.dm
@@ -15,6 +15,7 @@
 				if (!reaction_key || initial(reaction_key.rarity) > initial(req_gas.rarity))
 					reaction_key = req_gas
 		reaction.major_gas = reaction_key
+		message_admins("\ref[reaction]")
 		. += reaction
 	sortTim(., /proc/cmp_gas_reaction)
 
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/passive_vent.dm b/code/modules/atmospherics/machinery/components/unary_devices/passive_vent.dm
index b98cda9349..7cfdb9d63c 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/passive_vent.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/passive_vent.dm
@@ -30,23 +30,10 @@
 	var/pressure_delta = abs(external_pressure - internal_pressure)
 
 	if(pressure_delta > 0.5)
-		if(external_pressure < internal_pressure)
-			var/air_temperature = (external.return_temperature() > 0) ? external.return_temperature() : internal.return_temperature()
-			var/transfer_moles = (pressure_delta * external.return_volume()) / (air_temperature * R_IDEAL_GAS_EQUATION)
-			var/datum/gas_mixture/removed = internal.remove(transfer_moles)
-			external.merge(removed)
-		else
-			var/air_temperature = (internal.return_temperature() > 0) ? internal.return_temperature() : external.return_temperature()
-			var/transfer_moles = (pressure_delta * internal.return_volume()) / (air_temperature * R_IDEAL_GAS_EQUATION)
-			transfer_moles = min(transfer_moles, external.total_moles() * internal.return_volume() / external.return_volume())
-			var/datum/gas_mixture/removed = external.remove(transfer_moles)
-			if(isnull(removed))
-				return
-			internal.merge(removed)
-
+		equalize_all_gases_in_list(list(internal,external))
 		active = TRUE
 
-	active = internal.temperature_share(external, OPEN_HEAT_TRANSFER_COEFFICIENT) ? TRUE : active
+	active = internal.temperature_share(external, OPEN_HEAT_TRANSFER_COEFFICIENT) || active
 
 	if(active)
 		air_update_turf()
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm b/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm
index a14eb38229..6192c904c4 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm
@@ -156,10 +156,8 @@
 		return FALSE
 
 	if(scrubbing & SCRUBBING)
-		var/transfer_moles = min(1, volume_rate/environment.return_volume())*environment.total_moles()
-
 		//Take a gas sample
-		var/datum/gas_mixture/removed = tile.remove_air(transfer_moles)
+		var/datum/gas_mixture/removed = tile.remove_air_ratio(volume_rate/environment.return_volume())
 
 		//Nothing left to remove from the tile
 		if(isnull(removed))
@@ -173,9 +171,7 @@
 
 	else //Just siphoning all air
 
-		var/transfer_moles = environment.total_moles()*(volume_rate/environment.return_volume())
-
-		var/datum/gas_mixture/removed = tile.remove_air(transfer_moles)
+		var/datum/gas_mixture/removed = tile.remove_air_ratio((volume_rate/environment.return_volume()))
 
 		air_contents.merge(removed)
 		tile.air_update_turf()
diff --git a/code/modules/atmospherics/machinery/pipes/pipes.dm b/code/modules/atmospherics/machinery/pipes/pipes.dm
index 23fd2292ff..e05502dbad 100644
--- a/code/modules/atmospherics/machinery/pipes/pipes.dm
+++ b/code/modules/atmospherics/machinery/pipes/pipes.dm
@@ -54,6 +54,9 @@
 /obj/machinery/atmospherics/pipe/remove_air(amount)
 	return parent.air.remove(amount)
 
+/obj/machinery/atmospherics/pipe/remove_air_ratio(ratio)
+	return parent.air.remove_ratio(ratio)
+
 /obj/machinery/atmospherics/pipe/attackby(obj/item/W, mob/user, params)
 	if(istype(W, /obj/item/pipe_meter))
 		var/obj/item/pipe_meter/meter = W
diff --git a/code/modules/mob/living/carbon/life.dm b/code/modules/mob/living/carbon/life.dm
index 9885efd7c7..b8fa8aca44 100644
--- a/code/modules/mob/living/carbon/life.dm
+++ b/code/modules/mob/living/carbon/life.dm
@@ -115,11 +115,11 @@
 				breath = loc_as_obj.handle_internal_lifeform(src, BREATH_VOLUME)
 
 			else if(isturf(loc)) //Breathe from loc as turf
-				var/breath_moles = 0
+				var/breath_ratio = 0
 				if(environment)
-					breath_moles = environment.total_moles()*BREATH_PERCENTAGE
+					breath_ratio = BREATH_VOLUME/environment.return_volume()
 
-				breath = loc.remove_air(breath_moles)
+				breath = loc.remove_air_ratio(breath_ratio)
 		else //Breathe from loc as obj again
 			if(istype(loc, /obj/))
 				var/obj/loc_as_obj = loc
diff --git a/code/modules/mob/living/simple_animal/bot/mulebot.dm b/code/modules/mob/living/simple_animal/bot/mulebot.dm
index 9176f410c3..b287b854a3 100644
--- a/code/modules/mob/living/simple_animal/bot/mulebot.dm
+++ b/code/modules/mob/living/simple_animal/bot/mulebot.dm
@@ -753,6 +753,12 @@
 	else
 		return null
 
+/mob/living/simple_animal/bot/mulebot/remove_air_ratio(ratio)
+	if(loc)
+		return loc.remove_air_ratio(ratio)
+	else
+		return null
+
 /mob/living/simple_animal/bot/mulebot/do_resist()
 	. = ..()
 	if(load)
diff --git a/code/modules/power/turbine.dm b/code/modules/power/turbine.dm
index a9acea719c..bb92da2f4f 100644
--- a/code/modules/power/turbine.dm
+++ b/code/modules/power/turbine.dm
@@ -128,12 +128,10 @@
 	cut_overlays()
 
 	rpm = 0.9* rpm + 0.1 * rpmtarget
-	var/datum/gas_mixture/environment = inturf.return_air()
-
 	// It's a simplified version taking only 1/10 of the moles from the turf nearby. It should be later changed into a better version
+	// above todo 7 years and counting
 
-	var/transfer_moles = environment.total_moles()/10
-	var/datum/gas_mixture/removed = inturf.remove_air(transfer_moles)
+	var/datum/gas_mixture/removed = inturf.remove_air_ratio(0.1)
 	gas_contained.merge(removed)
 
 // RPM function to include compression friction - be advised that too low/high of a compfriction value can make things screwy