After playing for a while (couple hours) I get this error (unexpected error 1) and then the game crashes to desktop. Just before this, my fps tanks for a few seconds. This seems to only happen in Mor Dhana. I have a Radeon 7850 2gb, 8gb RAM, and i5 3570k. I've never had this before and it only started a few days ago, but I just hit 50 so haven't had much time in Mor Dhana until now.

I read some old threads with people having this issue during the summer, but is this still an issue today with Radeon cards? I tried both latest stable and latest beta drivers with same results.