Clearly you did not read what happened.
Nvidia fcked up AMD yet again and managed to implement their black box DLL for hair (HairWorks) which is rigged and it runs poorly on anything else but their cards.
Just disable Nvidia Hairworks in the options and voila, stellar performance.
AMD fcked up because they were not a part of the game development for TressFX 3.0 (
AMD hair implementation) implementation which works on all cards BTW. Nvidia offers developers a simple black box DLL into which no one has a chance to see the sourcecode. Nvidia must work with the developer in order to tweak it to that particular game.
Don't worry, TressFX 3.0 will be implemented in the new Deus EX Universe game (
trailer)
Why do you think that their DLL is closed? So it is proprietary and that they can fck any manufacturer performance wise when it is used.
So I say fuck nVidia, and again,.. fuck nVidia.
Don't get me wrong, their cards are great, it is just shitty practices nVidia uses to fxk the rest of the gamers I have a problem with.