Today I wiped my harddrive of everything and did a clean reinstall of windows 7 64bit because I recently got FPS problems when turning my camera.
I installed all the drivers, and then started to download a new copy of WoW.

Now when it's finally ready, I log into the game and I have 200fps. I have no addons, and have all the defualt settings on.
But when I turn the camera around with my mouse I freeze for a split second, drop to 20 fps and then its back to 200fps.. I turn the camera again and the same thing happens :((..

What is going on here :s... Why do I keep dropping fps and freeze every time I change direction / try to look whats at the side of me..

My speccs are:
Asus Sabertooth p67
Asus GTX 560ti
Intel i5 2500k
win 7 64bit