Hey all,
I recently did a re-install of the OS(XP) on my computer. After which i reinstalled all graphics mouse/keyboard devices from their appropriate CDs and Sites.
Currently Running:

Quad Core
Dual Nvida Sli 8600's (1 gig video)
Sli Ram 4gb

The Issue that has arisen is, when i shake my mouse quickly i go from 170FPS to 33-55. I understand that moving the mouse should cause some loss of FPS but its quite ridiculous now the FPS loss i get because its noticeable when i play. This problem is very new, and I've had the same computer for 3 years without this problem and dont understand why now its decided to happen? Suggestions would be nice!
Ive played seasons of cal, esea without this problem on this computer.

(Currently running Casey's Config)
(Launch options are set)
(Vid options are mostly low, though the computer can play all high )