@HomerJay42
In the end it wasn’t any of the scripts I thought.
I removed the counter script, hitmarker and max ammo, but the issue was still there.
Then I remembered to check the maps folder. I had a custom.gsc there to enable pause, and also a zombiemode.gsc for sharing the mystery box (which honestly never worked very well).
I removed only the zombiemode.gsc related to the shared box, and everything started working perfectly again.
Thanks for the help!