I have a friend who had this, pasting a section of the discussion from our board
round about midnight when i was gettin alittle bit bored, i played around with the nvidia control panel and found an TES 4:Oblivion option in the graphics settings. from there i could enable sli. thats when i could play with everything on high, and i realised this is the most beautiful and immersive game iv ever played.
So there you have an idea, worth a try if you havent already
Shouldnt have to settle for less then max settings, I got mine at max and play no lag atall. With 2 in sli you should be the same