My game usually crashes after about an hour+ of gameplay. It is guaranteed to crash if I do a dungeon and then try to zone from Mor Dhona to Coerthas. There is something about that connector that crashes my game. Teleporting does the same thing as well. It's just as everyone else has stated. My game will dip in framerate then it may or may not crash right away. I am using a HD 7970. From what I have read, AMD seems to be having the biggest problem with this.