Dual Monitor Mouse Lag Issue Help Please

Hey guys, recently I have connected a 24" Synaps and a 17" Sharp monitor for the heck of it so I could stream movies and such while I gamed a bit. Installation goes fine but when i go to WoW to play the mouse is so choppy that it's unplayable. The fps seems to skip from 20-90fps. Is there something I am missing when it comps to dual monitor setup that can prevent this setup because I am knew to this and just set it up about 10 mins ago. My pc is NOT old the specs will be listed below, thanks !!


windows 7 ultimate 64bit
700w corsair ps
ati radeon 4850
Phenom II x4 955 Black edition 3.2ghz
M4a79xtd evo mobo
4gb G.skill Ripjaws
500gb seagate
24" Synaps
17" Sharp