Battlefield 3 Unplayable FPS

its_ef

Honorable
Aug 25, 2013
1
0
10,510
Back in June I could play BF3 on medium settings with around 30 FPS on a Dual Core 3ghz Phenom II and a Radeon HD 5770. Since then I have put in a quad core Phenom II and a Radeon HD 7870. My fps will not go above 25 on low, or ultra settings. It has made the game unplayable. I have updated my graphics drivers and reinstalled the game and I still get the same results.
 
Solution
clear your cmos, it could be that your motherboard is using the old settings for your dual core.

also make sure your bios is up to date as exploitfinder mentioned.