Hello, I usually play skyrim on ultra however when I start the quest Battle for Whiterun, when arriving at the camp begins to lag when playing the music, and the fps down...Can someone help me?

Obs:Play the game normally, so the lag in this scenario quest( Battle for Whiterun)

Lots of NPCs in the Battles, try the game again under a Clean Boot

http://support.microsoft.com/kb/929135

Uncheck everything, and reboot the machine. The only thing loading should be Steam and the game. If your concerned about internet security, put Steam in Offline mode before you reboot, then you can unplug your modem.

If things run better, then find out what programs you can load with windows and play the game and what you cant. Hint, other than AV programs, nothing needs to load with Windows.

> I usually play skyrim on ultra <

Well, put the sliders at high then, and see what different it makes....

Actually, what's your comp specs, at what resolution do you play, with Anti-aliasing enabled (?!?), do you have any mod's ???