Compatibility Report

• Name of the game with compatibility issues: Space Marine 2
• Steam AppID of the game: 2183900

System Information

• CPU: Ryzen 7 7600
• RAM: 32GB DDR5
• STORAGE: 1TB NVME SSD
• GPU: Rx 9060XT 16gb
• Video driver version: MESA 25.2
• Kernel version: 6.17.9-2-cachyos
• Proton version: Any. (Proton 10.0-3, GE-PROTON10-25, PROTON EXPERIMENTAL...)

I confirm:

• [ X] that I haven't found an existing compatibility report for this game.
• [ X] that I have checked whether there are updates for my system available.

Symptoms

After patch 11, the game experiences huge frame rate drops for a few seconds before recovering.

It goes from a stable 70 FPS to 5-6 FPS for two or three seconds. Similarly, during moments of frame rate drop, the sound becomes choppy.

This happens frequently or when loading new environments or particles. I can't find a pattern to the cause.

I've tried various versions of Proton and different graphics settings, and I've also tried removing the shaders to force them to reload, but so far, no solution has been found.

Reproduction

Install the latest version of Space Marine 2 released on Steam and run it under the Proton compatibility layer.