Low FPS after upgrading Fedora to 39

[kjarosh]

Your system information

• System information from steam (Steam -> Help -> System Information) in a gist: https://gist.github.com/kjarosh/00bf2ebbc4f5ec423ba2cb60541176be

• Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

Game is unplayable due to low FPS. It is especially evident during combat, looking at smokes/flames, spraying but it is not consistent: sometimes it lowers FPS to like 30, sometimes to 5. This starts happening as soon as the game is started, restarts do not help at all. Usually on spawn and far from enemies the FPS is high.

This started happening right after upgrade from Fedora 38 to 39. Fedora 38 newest updates — no issues, as soon as I upgraded to Fedora 39 it started happening.

Steps for reproducing this issue:

1. Play the game on Fedora 39.