https://bugs.freedesktop.org/show_bug.cgi?id=80419
--- Comment #21 from theamazingjanet@googlemail.com --- (In reply to comment #20)
The crash looks like a complete GPU hang that locks up the entire card. If it helps I can look into getting exact instructions on how to attach apitrace to the Steam release.
That would certainly help. Thanks for taking the time to do this.