Is this perhaps something with the autosave? After it crashes it generally starts right back up where it left off. The crash seems completely random (inside, in a cave, walking around outside). When it dies, the game just freezes and then eventually closes back to the desktop with no message.
DX Diag is attached.
Trying to upload a .dmp file but it's too big for the forum so I put it here: https://ufile.io/pv0jx