When using Proton, set the Steam launch options for your game to PROTON_LOG=1 %command% and attach the corresponding steam-xxxxx.log file in your home directory.
When using regular Wine, use wine game.exe > game.log 2>&1 and attach the resulting game.log file.
Software information
Hammer++ for Garry's Mod
System information
Apitrace file(s)
For instructions on how to use apitrace, see: https://github.com/doitsujin/dxvk/wiki/Using-Apitrace
Log files
Please attach Proton or Wine logs as a text file:
PROTON_LOG=1 %command%and attach the correspondingsteam-xxxxx.logfile in your home directory.wine game.exe > game.log 2>&1and attach the resultinggame.logfile.