diff --git a/code/game/atoms/atom.dm b/code/game/atoms/atom.dm
index 18d89a31e4c4..a89b2c238072 100644
--- a/code/game/atoms/atom.dm
+++ b/code/game/atoms/atom.dm
@@ -810,7 +810,7 @@
 			msg = lang.scramble(msg)
 		M.show_message(msg, 2, deaf_message, 1)
 		heard_to_floating_message += M
-	if(!no_runechat)
+	if(!no_runechat && ismovable(src))
 		INVOKE_ASYNC(src, TYPE_PROC_REF(/atom/movable, animate_chat), (message ? message : deaf_message), null, FALSE, heard_to_floating_message, 30)
 
 /atom/movable/proc/dropInto(var/atom/destination)
diff --git a/code/game/objects/items/devices/gps.dm b/code/game/objects/items/devices/gps.dm
index 2f5492808a77..f18af53f72a9 100644
--- a/code/game/objects/items/devices/gps.dm
+++ b/code/game/objects/items/devices/gps.dm
@@ -211,7 +211,7 @@
 		hud_bound?.add_screen(hud_arrow)
 	hud_arrow.set_disabled(FALSE)
 	update_tracking()
-	START_PROCESSING(SSprocessing, src)
+	START_PROCESSING(SSfastprocess, src)
 	return TRUE
 
 /**
@@ -224,7 +224,7 @@
 	tracking = null
 	// just kick it out
 	hud_arrow?.set_disabled(TRUE)
-	STOP_PROCESSING(SSprocessing, src)
+	STOP_PROCESSING(SSfastprocess, src)
 	return TRUE
 
 /obj/item/gps/process(delta_time)
@@ -238,7 +238,7 @@
 		return
 	var/angle
 	var/valid = TRUE
-	var/curr_l_id = SSmapping.fluff_level_id(get_z(src))
+	var/curr_l_id = SSmapping.level_id(get_z(src))
 	var/turf/T = get_turf(src)
 	if(!T)
 		hud_arrow?.set_disabled(TRUE)
@@ -253,7 +253,7 @@
 		var/datum/component/gps_signal/sig = tracking
 		var/atom/A = sig.parent
 		var/turf/AT = get_turf(A)
-		if(SSmapping.fluff_level_id(get_z(A)) != curr_l_id)
+		if(SSmapping.level_id(get_z(A)) != curr_l_id)
 			valid = FALSE
 		else
 			angle = arctan(AT.x - T.x, AT.y - T.y)
diff --git a/code/modules/multiz/movement.dm b/code/modules/multiz/movement.dm
index fc4f35c65317..6e834fede39d 100644
--- a/code/modules/multiz/movement.dm
+++ b/code/modules/multiz/movement.dm
@@ -83,13 +83,9 @@
 		else
 			to_chat(src, SPAN_WARNING("Gravity stops you from moving upward."))
 			return FALSE
-	var/old_z = get_z(src)
 	// todo: this should not use Move()
 	if(!Move(destination))
 		return FALSE
-	var/new_z = get_z(src)
-	if(old_z != new_z)
-		on_changed_z_level(old_z, new_z)
 	return TRUE
 
 /mob/proc/can_overcome_gravity()