final tweaks

code/controllers/configuration/entries/game_options.dm

@@ -297,6 +297,9 @@
 	. = ..()
 	for(var/datum/hud/human/H)
 		H.assert_move_intent_ui()
+	if(!config_entry_value)		// disabled
+		for(var/mob/living/L in world)
+			L.disable_intentional_sprint_mode()
 
 /datum/config_entry/number/movedelay/sprint_speed_increase
 	config_entry_value = 1

code/modules/mob/living/living_sprint.dm

@@ -63,6 +63,8 @@
 	update_sprint_icon()
 
 /mob/living/proc/user_toggle_intentional_sprint_mode()
+	if(!CONFIG_GET(flag/sprint_enabled))
+		return
 	var/old = (combat_flags & COMBAT_FLAG_SPRINT_TOGGLED)
 	if(old)
 		if(combat_flags & COMBAT_FLAG_SPRINT_FORCED)