iLLuSiOn26

Hello guys, I have a real problem with the fps in Arma2 OA. I tryed 2 search online for fixing my problem but i couldnt find anything that helped me. When playing im only getting a max of 11 FPS ! and some micro lag every 4 to 7 sec. i tried a few settings in videosetting but it didnt helped. my specs are Intel Core 2 CPU 6400 @ 2.13 GHz 2.13 GHz, 3,00 GB of RAM ATI Radeon HD5670 1 GB GDDR5 Plz help me Thank you