realy WEIRD 20 fps lock problem

[Nasty]

Again when i try to get 3 monitor to work with bs with good frame rate all start suck.

 

What a heck can be wrong when configurate 3 monitor all seems be ok but frames stuck 20fps , not even help if i try run all low without shadow and water 1.

 

when i take one screen out and use sli mode without game settins sli i got solid 30fps.

and major problem is if i take sli mode off i got 20 fps 2 screen too..

 

computer specs is phenom 965 3,4 ghz, 4 gb 1066 ram, sata raid fastmode hd , 2x8800gt nvidia. creative xfi gamer sound card.

Ps. weird think is if i overclock my cpu 3.8 ghz frames still are 20 and i try overclock gpu still got 20fps.

i dont realy any get this problem.

Just clean install vista 64x and newest drivers

[Nasty]

this problem solved sli some how cut output resolution and thats why got 30fps but not whole area is covered game renderer so primary problem is my gpu's suck :(