Bug Report (Console all of a sudden gets spammed with "CUtlLinkedList overflow! (exhausted index range)" millions of times, causing extreme FPS loss.

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Location
United States of America
Type of Bug: Map

Description of the Bug: Console all of a sudden gets spammed with "CUtlLinkedList overflow! (exhausted index range)" millions of times, causing extreme FPS loss. The only solution I have so far is to retry in console.

How to reproduce the Bug: This only seems to happen around PD. It happens randomly from what I can tell, but only after being on for a little bit (over ~45 minutes). After being on for a bit, if you walk around PD, it has a chance of happening. I have not been able to reproduce it in any other location other than near PD (like on the sidewalk outside PD or PD public parking lot).

Time Stamp: 8:57 PM EST on Jun 10, 2026.

Errors: CUtlLinkedList overflow! (exhausted index range)

Media: https://i.gyazo.com/70f0ba0368642566363f5d5bd0cd5bd4.png

Here it is happening on two occasions, about 15 minutes apart (I rejoined after the first one).
 
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Upvote 4
I have had this happen a couple times, unsure on cause, will update if I get it again with timestamp
 
The error popped up for me 2 times in like 20 minutes however after deleting all cache in /Garry's Mod/cache I could play the rest of the day without getting it. It could be a possible fix or I was just lucky and it didn't happen again for no reason.

For me it has always happened when there has been a shootout and a lot of city employees show up. Could be a problem with the lights on the emergency vehicles maybe?

 
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I have experienced the same issue multiple times. It always happens when I go past the storage in the city, fps instantly drops to 3-6 and stays like that until I leave the area. After that it stays on steady 13-16 until i rejoin, when I had 60-70 before entering the storage area.

 
Happened to me twice yesterday after seeing a police car for the first time. After that I kind of just gave up.
 
The error popped up for me 2 times in like 20 minutes however after deleting all cache in /Garry's Mod/cache I could play the rest of the day without getting it. It could be a possible fix or I was just lucky and it didn't happen again for no reason.

For me it has always happened when there has been a shootout and a lot of city employees show up. Could be a problem with the lights on the emergency vehicles maybe?

Peak driving on my part there too
 
Does this only happen on the night map? Seeing as all the evidence posted here is from that map.
I believe this is the normal map, but at night. Couldn't actually see the clip because it was deleted. Emergency vehicles seems to be a common denominator at least.
1781177647946.png
 
Happened to me twice yesterday after seeing a police car for the first time. After that I kind of just gave up.
I confirmed today that this happens on both maps. It might not actually be a map issue, since I got it around city garage today. Here's the clip of that:

I think looking into the emergency lights is a good first step.
 
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