this might sound like crap but it works for me..up untill now i couldent play skyrim on ultra without a fps drop..but i found this weird fix. wonder if it works for anyone els. when ingame press ctrl alt and delete (screen should go back to windows but then automaticly go back to the game.at this point the fps will be reely bad.but pres exit so ur on the game menu move ur mouse around for a bit there should be alot of lag but if u continue doing it the lag gose and it becomes smooth and then when you go back to the game and fps drop that you had is better if not gon completly then what it was when u first enterd the game. this is bizare but it works