Microstutter that is only solved by reboot

[zealain]

Type

Performance

Bug description

Occasionally, when booting up the game I get microstutters that make it look as if the game is running at a lower FPS. It's very subtle, but quite distracting. Restarting the game does not help, rebooting my PC on the other hand does usually resolve it.

Looking at the frame graph, I can see that in the good case, I get a solid, steady 1000 FPS. In the bad case the FPS is much more unstable and dips lower, rarely reaching 1000. I can also clearly see lagspikes on the frame graph. Interestingly, the lagspikes get amplified by a lot after a few seconds when pausing, which only happens in the bad case.

Screenshots or videos

I have recorded some gameplay for the good and the bad case as a comparison. The stutter is quite hard to see on video (I couldn't get it to record at 144 FPS), but I included the frame graph which might help.

Bad:
https://github.com/user-attachments/assets/1eee9b3d-bdb9-4b19-8965-3cb7e5904220

Good:
https://github.com/user-attachments/assets/1328bf47-feaa-4acc-9e89-d6885bfe09f2

Version

2025.118.3

Logs

I included the logs of both the good and the bad case, maybe the comparison helps.

bad.zip
good.zip

[peppy]

Could you try tabbing in and out of the game and see if it helps at all? It seems on the surface like the game may somehow not be running with the correct GC mode internally (the spikes seem to correlate to collections), but this is very hard to discern, and it may just be a side effect of something external.

Have you tried closing every other app on your system (including drivers and other things in system tray)? This is 99% the cause of these kinds of issues.