I know this may sound redundant, and I know there were many posts on whether or not a CPU/GPU can run Battlefield 3. I just can't seem to find the solution to my specific problem at hand.
So this is my PC setup...
ASUS Crosshair III Formula AM3 motherboard
AMD Phenom II X6 1055T *stock speeds*
ATI Radeon HD 5770 1GB, Directx 11 support
2x2gb DDR3 ram
...so I installed BF3 and played for the first time. I set the video settings to "auto", which automatically adjusts to high settings. Almost immediately, after I launch the campaign, my gameplay lags beyond control. Everytime I move my mouse to the left or right, there is a few second delay before it actually happens. When I shoot, there is also a few second delay. When I try to strafe left/right or walk front/back, there is also a few second delay. Afterwards, I adjusted the video settings back to medium, and it still does not solve my issue. I then adjusted for low settings and the same thing happens.
I did a benchmark of my FPS as follows using FRAPS utility:
Medium: min 38, max 62, avg 49
low: min 40, max 63, avg 53
So then I installed BF3 onto my brother's PC to test the issue. Here are the specs of his PC:
ASUS Crosshair IV AM3
AMD Phenom II X4 965
ATI Radeon HD 5850
...and to my astonishment, the game runs ever so smooth with no lag at all. His rig was able to run BF3 on high settings throughout - lag free. So what I did was I swapped his HD5850 to replace my HD5770, loaded up BF3 and the same problem occurs!!! I updated latest ATI driver already, and it still does not run smooth.
Sorry about the long post, as I have searched every where for answers and I just can't seem to find the solution. It has been 3 days of tweaking and changing hardware/software and I still cannot fix my BF3 gameplay. Many thanks.
It's not your 1055T preventing you from playing, your getting good fps but experiencing horrible input lag from the sounds of it.
Don't know if it'll effect anything, but have you tried a different keyboard/mouse or moved them to different USB ports? It's worth a shot, simple to try. I'm gonna hit google and see if I can find any better advice, BF3 does have a lot of bugs right now too, a patch is coming soon to fix a variety of things. I personally cannot play co op because my keyboard/mouse won't function in that mode but the rest of the game works fine for me.