Please describe your issue

Warhammer 40,000: Space Marine 2 consistently crashes a few seconds after reaching the main menu.

The game starts normally and renders the main menu. After approximately 3–5 seconds (even without any user interaction), the game freezes and the in-game crash handler appears.

The issue is 100% reproducible.

Each crash produces the following kernel message:

NVRM: Xid (PCI:0000:0b:00): 13
Graphics Exception: Class 0000c797

The issue reproduces on both KDE Plasma Wayland and KDE Plasma X11.

I have already tested:

• Proton Experimental (experimental-11.0-20260724c)
• Proton Hotfix (hotfix-20260727-d4)
• Deleted Proton prefix
• Deleted Steam shader cache
• Verified game files
• Wayland and X11
• No MangoHud
• No Gamescope
• No vkBasalt
• No custom Proton environment variables

Software information

• Game: Warhammer 40,000: Space Marine 2
• Renderer: Direct3D 12
• Settings: Default (crash occurs before gameplay)

System information

• GPU: NVIDIA GeForce RTX 3080 Ti
• Driver: NVIDIA 610.43.03 (Open Kernel Module)
• Wine version: Proton Experimental (experimental-11.0-20260724c)
  • Also reproduced with Proton Hotfix (hotfix-20260727-d4)
• VKD3D-Proton version: Bundled with the above Proton versions

Log files

Jul 30 13:10:46 p200300ED7F0482b306421aFfFe06842f.dip0.t-ipconnect.de kernel: NVRM: Xid (PCI:0000:0b:00): 13, pid=851047, name=Warhammer 40000, Graphics Exception: channel 0x0000001a, Class 0000c797, Offset 00000000, Data 00000000

Attached:

steam-2183900.tar.gz