Well whenever I leave my computer idle for about 4 minutes, the screen lags majorly. It happens when I'm playing games and watching videos, the framerate drops down to 4-5. I've tried going into the Nvidia control panel and changing Power Management Mode to "Prefer maximum performance", to no avail. I've also tried changing power plan settings in the windows control panel, specs are below.
3570k
8 GB DDR3 1600mhz
500 GB HDD
Gtx 460 se v2
Windows 7 Home Premium
3570k
8 GB DDR3 1600mhz
500 GB HDD
Gtx 460 se v2
Windows 7 Home Premium