First off here is my setup.
AMD Athlon II x4 640 processor 3.0GHZ
4g of RAM
Palit GTS 450 Card and its not overclocked.
Two Hard Drives (No SSD) Page file of at least 6000 on each.
Asus M4A785 MOBO and 3 case Fans
"C:\Program Files\Bohemia Interactive\ArmA 2\arma2OA.exe" -winxp -cpucount=2 -maxmem=2048
Vsync is forced off and not running SLI.
is my command line for the game.
When Arma 2 is running great I am getting 22 Fps in city and 30 or so in the country sometimes more.
When playing single player and sometimes multiplayer I get slow downs in FPS down to 5 or 6 FPS, and everything is streaking across the screen. I check the CPU load and no core is above 60% and temp is holding steading at 22C.
The game is perfect until it slows down, I used to get those out of memory errors ppl got, but have since gone away. I occasionally get a /.bin radio something or whatever error on Manhattan.
I run many other games with no problem, so I have a hard time understanding why a game like this is on the market with so many problems.