Low performance on SLI/Win 7 rig

I am Getting a some confusing problems with the performance. I am not able to get anything above 20fps even after doing all the settings. I switched all the option from high to average and from average to low but after that also FPA remain same. Also, mouse movement is wildly jerky. Normally I play in single-player but I feel like I am online with the dialup connection according to my mouse behavior. Across the screen it moves slowly. My system has Dual GTX260's w/ 1.8GB per card with the latest SLI drivers and trip-Chan RAM of 6GB and I have installed Windows 7. Please tell me how to solve this problem?

I don’t know that actual problem is same or not, but I have one suggestion which may help to fix the problem. If your pc has automatically changed game compatibility mode to the windows xp , then you have to make it foe windows 7, after that you have to check that all of your hardware is available there or not? Check in device management. After doing all the things check that all latest drivers are installed of your GPU and CPU. After that you will not find the same problem again.

Don't know if this is in fact the difficulty, but i'm just going to guess a few things that might help. Don't know if you accidently misrepresented the game to windows xp compatibility, make sure it's on windows 7.First confirm the taht if all of your hardware was available? (device management),Do you have the latest drivers for your gpu/cpu etc.Other then that i might actually say your specs are TOO high. Try this it will help you. For better solutions.

Hey I have read your problem. After doing analysis on your issue I don’t think there is anything wrong with your system. If you want to solve this problem then I think you should try to change the resolution and after changing the resolution it will stop it to go above 2o FPS. I have also tried this and its really worked for me. I hope you will get positive results. if you still finding any difficulty then please let me know.

After have read your problem. You can follow this steps to solve this First you need to completely remove Card drivers by uninstalling from Control Panel and then booting into Safe Mode. After rebooting one more time into Safe Mode and then use a combination of clean the registry + manually searching my C drive and CCleaner then registry for scraps. After that reinstall the latest drivers but, somewhat than presently extracting the drivers and letting the install run from side to side normally, then cancel the Setup and go to the extracted folders and then removed the NV3DVision & NV3DVisionUSB. HDAudio folders and drivers will remain as it is because they don’t need any setup.after that run setup.exe again and click on custom installation. Now Select the Clean Install and let it finish. Once it finishes it will restart the system. Now all games will not gives any problem.

Thank you for giving me helpful tips. It really worked for me. My all problem are solved now and I am not facing any problem. After reading your post I was not sure that this ricks will make any difference but I tried and I have to tell that your trick worked perfectly without any error. So I am very thankful to you and I really appreciate your efforts. Now all things working fine for me. So thank you so much once again.