Arma 2 OA single player FPS is right near multiplayer FPS!!!!!!!!

Well, ever since I have purchased Arma OA , the FPS in single player has been right near the FPS as I get in multiplayer, of around 24-around 40. I would only get around 45-60 FPS if I looked straight up in the sky. but looking infront behind or anywhere else the FPS is way lower. Makes no sense to me. It makes no difference if i'm playing max settings or not. I'm just completely dumb founded.:confused: Could it do anything with files in the Arma 2 folder or ? My specs are the following- I5 3570K, GTX 660 and 8gb RAM. Any advice would be appreciated. Thanks in advance!!:bounce3:

Why oh why people can´t spent even few minutes searching.

http://forums.bistudio.com/showthread.php?85124-ArmA2-OA-(low)-performance-issues

http://forums.bistudio.com/showthread.php?143792-A2-A2F-A2OA-Tweak-Guide

http://forums.bistudio.com/showthread.php?180221-Low-fps-and-often-lag-spikes-good-PC

For your information, i've been searching for roughly a week. I've done all the tweakage crap, with no luck!!

Give these tried and tested tweaks a go:

http://forums.bistudio.com/showthread.php?85124-ArmA2-OA-%28low%29-performance-issues&p=2081466#post2081466

and let us know how you get on..