Yes, as stupid as it sounds (reads) this is the perfect explanation of what is going on. I cannot even watch a youtube movie without constantly moving my mouse around.
This started 8 days ago when i upgraded my pc (clean install, not an "upgrade") to windows 8.1 x64 pro (it was win8) i used the same (latest) nvidia driver, everything was working until i noticed that sound of my gpu fan. it wasnt happening on win8.
what i tried; i overclocked my gpu clock from 810MHz 900MHz (it was MY set overclocking speed for last 3-4 months)
i tried K-Boost with and without overclocking
i tried both of the latest 2 beta nvidia drivers (and the stable one of course)
i checked power management, screen savers, services (like SuperFetch etc.) and i have absolutely no idea about why this is happening. Also this is happening when i am playing games. And i cannot play any games with controller because it slows down every 40 seconds but it is not happening when i am using mouse.
incase it is relevant my pc specs are;
Amd FX-8350 (no oc at all, all stock)
Gskill Ripjaws series 2x4 GB DDr3 1333 ram
Inno 3D GTX560 (%10 oc, to 900 MHz)