Just started the game up for the first time, intro movie was incredible (I'm guessing it was pre-rendered) but now I've got a problem, the graphics seems to be stuck on Low? I have a GTX Titan, I want to be on Ultra but when I set it to Ultra and restart the game it goes back to Low again. Is this the nvidia problem you guys were talking about earlier?
My problem was that the game failed to detect my GPU. I had to go into NVidia control panel to set it manually. I have a dual integrated/dedicated setup though, so if you only have the one GPU it may not be a similar problem.