Does the issue happen if you launch with PROTON_USE_WINED3D=1 %command%
Hello @chknatwork, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/5695#issuecomment-1240643142.
PROTON_USE_WINED3D=1x1 2022-09PROTON_USE_WINED3D=1 %command%x1 2022-09
Compatibility Report
System Information
I confirm:
steam-206480.log
] that I have checked whether there are updates for my system available.
Symptoms game doesn't launch after logging in from DNDLauncher.exe
Reproduction
Open Steam
Click Play, Launcher appears
Login
Select world to connect to, launcher closes
Steam doesn't launch game.
Same problem also occurs on Proton-GE 7.31-1, and other previous Proton versions up to 5.13-6