First off, sorry you have to deal with this.
Currently we are unsure why some people are having their games crash.
After a lot of testing we have not yet found a cause.
I will be updating a branch called crashtesting found in the betas tab in the games settings, if you can test that and give me the results, it will help us greatly.
Some things you can try:
Update Windows
Update Graphics
Run Steam as admin
Verify game files
Restart
Im trying to work out whats causing this issue, it seems to affect windows 10 more so than any other but because all our systems run fine I dont have a computer to troubleshoot.
If you could send any crash reports to [email protected]
Along with:
Operating system.
32 or 64 bit
If anything works for you, please let us know here: http://steamcommunity.com/app/431240/discussions/0/357287935540516933
Again, real sorry guys.
Im trying my best, thank you for your patience.