As the title stated. Example: World of Warcraft open, or ANY game full screen on one monitor. then youtube video 1080P onto the other with the window maximized (not full screen), or twitch.tv stream. same goes with full screen, my game screen lags... but if i make the browser size even 1 pixel smaller than the screen, the lag completely stops. runs as if it wasn't open. any reason why? also adding extra 2+ monitors causes no lag either. this is my off system, but its quite powerful so im pretty sure it could handle this? also all temps below 40-30c. also tried swapping the programs to the other monitor. same thing.
CPU: 4770k i7
RAM: G.SKILL Ripjaws Series 16GB (4 x 4GB)
MoBo: Z87-A
GPU: GTX 770 2gb
Hard drive: SSD samsung 840evo 500gb + WD 1TB 7800RPM
Sound Card: Creative Sound Blaster Z
CPU: 4770k i7
RAM: G.SKILL Ripjaws Series 16GB (4 x 4GB)
MoBo: Z87-A
GPU: GTX 770 2gb
Hard drive: SSD samsung 840evo 500gb + WD 1TB 7800RPM
Sound Card: Creative Sound Blaster Z