game gets extremely stuttery after round 15

[twl-surrogate]

Your system information

• System information from steam (Steam -> Help -> System Information) in a gist:
  https://gist.github.com/twl-surrogate/93cf09fee81d7ab4d38669ce7c05a752
• Have you checked for system updates?: Yes

Launch Options

gamemoderun %command% -vulkan -novid -nojoy -freq 60 -threads 8

Please describe your issue in as much detail as possible:

The game starts to stutter after the first half of a long game or near the end of a short game, the FPS counter doesn't change, it fixes itself after a restart

Steps for reproducing this issue:

1. play matchmaking
2. wait for round 15ish
3. game starts to stutter

[kisak-valve]

Hello @twl-surrogate, this issue is already being tracked at #2901. Closing as a duplicate.