Compatibility Report

• Name of the game with compatibility issues: Borderlands 3
• Steam AppID of the game: 397540

System Information

• GPU: GTX 1070
• Driver/LLVM version: 440 and 435 (tested both)
• Kernel version: 5.0.3-42-generic
• Link to full system information report as Gist: System specs
• Proton version: 4.11-13 and 5.0-5 (tested both)

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.

steam-397540.log

Symptoms

Game started fine on i7-2600 but does not work on Ryzen 5 3600 anymore:
After pressing play, the preparing to launch window appears, followed by the Borderlands 3 banner but instead of the loading screen launching as the third window, the game crashes.

Reproduction

Same behavior on every start.

Steps that I've tried

• Added clearcpuid=514 to kernel boot parameters according to this workaround for Ryzen 3XXX cpus. Verified that dmesg no longer shows a problem with Borderlands 3
• Downgraded driver from 440 to 435, which the game launched with on old cpu
• Tried 4.11-13 and 5.0-5 Proton versions (former worked previously)
• Used a workaround for .mp4 files not playing (this also worked previously)