i have corei5 dell and 5 gb ram and motherboard is vostro 430.sincei ge gtx 660 2gb it get a little problem.if i do not use mouse for a little time the game screen start jerking.when i move mouse a little it start working again smoothly.i have to play with controller but this problem i annoying me.plz tell me solution.some time games cut scenes also start jerking but when mouse or key board button pressed it start workin smooth,plz help me thanx