Bug #7430

Game Crashes and Stutters on Proton 10+ and Performance Issues on Proton 9

Status:	Open
Priority:	Critical
Added by:	Anonymous on September 23, '26
Assigned to:	Unassigned
Due date:
Reported for:	10.1.2
Actual Result:	game crashes
Expected Result:	game launches and plays without stutters
Severity:	Blocker
Reproducibility:	Always
Platform:	Steam
Additional Notes & Comments:	This issue first occured after the anticheat trial rollback

Steps to Reproduce

1. Launch on linux system through proton 10 or higher
2. watch it crash
3. switch to proton 9
4. game launches but has severe performance issues

Explanation

Game doesn't launch over Proton on newer versions 10+ and stutters/crashes on lower proton versions.
Crashes on these versions too:

• Proton experimental
• Proton-CachyOS Latest
• Proton-GE Latest
• proton-cachyos-11.0-20260703-slr-x86_64
• Proton Stable
• Proton 10
• Proton 11 Works with severe performance issues on Proton 9

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