My Geforce 9800 GT has 1 gb DDR3.
I have all my games installed on a separate drive which is brand new and very fast. I dont think thats the problem, im pretty sure its my processor.
That being said, I've been able to tweak the hell out of and may have found a 'happy medium'.
I'll try to sum up my tweaks:
1. max FPS = 20
2. Overall detail 2. Aircraft 4, Terrain 2, Scenery 2, Special Effects 2, Clouds 1
3. Dual Render Pass, unchecked.
4. High Resolution Z-Buffer and Terrain Detail Texture checked.
5. Texture Info set according to: http://www.overflandersfields.com/Tips.htm
6. Nvidia Nhancer set as per this thread: http://forum.combatace.com/topic/52702-nhancer-utility-for-nvidia-card-users/
These settings seem to work during the campaign, the slowest i've seen now is 14.86 FPS. Thats just about tolerable at this point I suppose.
Im always open to new suggestions and tweaks, I'd love to find a few more FPS. I'd also like to be able to turn Terrain and Scenery up to 3 but that seems to cause alot of stutters during a crowded campaign mission.
If I find anything new, i'll post here.