rFactor 2 Demo (400330)

Your system information

• Steam client version (build number or date): 1591251555 June 4, 2020
• Distribution (e.g. Ubuntu): Mint 18.3 Cinnamon (Ubuntu 18.04)
• Opted into Steam client beta?: [Yes/No] No
• Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

Describe what you expected should happen and what did happen. Please link any large code pastes as a Github Gist

• Installed Steam from the latest.deb download (not apt)
• Installed updates
• Enabled Proton 5
• Downloaded "Factor 2 Demo"
• After download completes, the files validate no problem. Shows in library etc.
• Try starting it... I get a small black box. Then a fullscreen black box. Then back to the steam launcher...
• Launches shows 1min of play time. Was one second of black screen only.
• enabled logging. Log file attached. Not sure how to diagnose.
• Log seems to end in a virtual blue screen of death...

Asus MB, i7-2700K, 32Gb RAM, SSD etc. AMD FirePro W2100 dual display

There is lots of evidence of this working for others. But I can't get past the start. Any suggestions would be most appreciated.

steam-400330.log

Start with the attached steam-400330.log and the reported Mint 18.3/Ubuntu 18.04 setup; reproduce the launch failure with Proton 5 and determine whether the log identifies a component or driver issue. Done means a confirmed fix or a documented compatibility diagnosis, but the issue does not name a source file or test.