I finished today, and currently I had zero crashes. Quite enjoyable dlc. Not very sure about the complains about the story, the fighting, etc, for me at least, it was quite easy (I started it in medium difficulty and level 60)
The game is really good until the final phase, which destroys all the fun you had previously in the game. Annoying, frustrating and in my opinion a disaster of design. I was really enjoying it until that part, it's a pity.
