sli problems

[fadetoblack]

im having some major issues with sli enabled. in team fortress 2 with sli on it keeps jerking every few seconds, but in between its fine. so its not a constant choppyness. i disabled sli in the control panel and the pausing issue went away. also when its enabled im having problems in crysis. first of all, the crysis menu screen looks fine but the screen edges seem to be shifted for the mouse. what i mean is that to click on a button for example, i have to click a little lower and to the right instead of actually on the button. also when i manage to get in the game it starts to render and then crashes. i have all the latest drivers so i dont know what the problem is.

for dual sli, does it matter if the bridge is on the left or the right slots?