i spent ages setting up bf2 with some of the goodies turned on and so that it doesnt get that annoying lag that seems to be the internet connection but really is your graphics card. got it all working nice and then one day it started to lag out every now and then. only when i noticed that i hadnt turned the other second display unit off that it stopped laggin out. i wouldnt recommend turning another monitor on if you are playing high spec demanding games such as bf2 or fear infact i would free up as much resources as possible unless you have a super computer