I am playing Skyrim for a while and I am getting this recurring problem. Please help me solve it.

In the middle of the game, skyrim crashes and then when I load any saved game, two things happen.
1. The game's frame rate become really choppy. the game takes big time jerks to move the character and the all the enviornment becomes choppy too.
2. The music behaves likewise, it take jerks and it seems like if you are running a duo core game on P1.

I have tried reinstalling the game, windows and everything.

Please help.

Maybe your pc can't handle it.

No, actually it was running smooth for many days on my pc on high settings. There should be some bug in the game.

I have solved it at last, huRRAH.

Three things,

1. set sound playback advanced property to 24 bit and 44kHz in the control panel
2. Use Skyrin better performance mod
3. disable AA and enable FXaa