Yea

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

@@ -100,8 +100,7 @@
 	. = ..()
 	to_chat(owner, SPAN_MACHINE_DANGER(FONT_LARGE("Your damage failsafes activate; your thought processes grind to a halt as your consciousness is cut off from the exterior world. No sensation or external input reaches you anymore.")))
 	to_chat(owner, SPAN_DANGER(FONT_LARGE("You are now in an emergency low power mode, so that your posibrain can still survive despite your chassis being destroyed.")))
-	if(owner.mind)
-		owner.mind.transfer_to(stored_mmi.brainmob)
+	owner?.mind?.transfer_to(stored_mmi.brainmob)
 
 /**
  * Helper proc to add fragmentation.

html/changelogs/hellfirejag-ipc-posibrain-fix.yml

@@ -0,0 +1,4 @@
+author: Hellfirejag
+delete-after: True
+changes:
+  - bugfix: "Fixed a small lag spike caused by ownerless IPCs dying."