Hello @Reiddragon, please copy your system information from steam (Steam -> Help -> System Information) and put it in a gist, then include a link to the gist in this issue report.
If possible, please retest with mesa built against LLVM 7+.
not possible, this is my only machine that I can't afford to run unstable software on
closing this issue as it is nearly 5 years old and a lot has changed since then
Nothing extracted yet.
When running the game with the Stable version of Proton, the game hangs for a few seconds before the whole system does the same. Obviously, can't get any crash log for the game when something like that happens.
Afterwards I tried Proton Beta, and it was slightly better. "Slightly", because the game still hangs, but the rest of the system isn't affected anymore.
I tried digging trough the game files for some log files, but couldn't find anything.
Sorry if my issue isn't of much help on why any of this happens.