I have this problem were with my new 500Hz mouse the position of it takes ages to update on the desktop and only the desktop, not any other interface.


See there, download the video if it won't play.

OS: Win 8 64 bit
CPU: AMD A4 4300M
RAM: 6GB (Dual Channel) 800 MHz

Any ideas?

EDIT: Also, when I move the mouse on thedesktop the CPU usage goes up to 50%! Any ideas? Explorer.EXE takes up all the CPU, no other programs do that.