Battlefield 2142 Issues (BF2 Engine in General?)

Here are my complete system specifications:

Intel Core Duo T2400 1.83ghz
2gb DDR2-667mhz RAM
Mobility X1600 256mb dedicated GDDR2
Mobility Catalysts 7.2
Windows XP Home SP2

Description of problem: Any game based on the BF2 engine do not run well on my system. As known 2gb of RAM really helps out the BF2 engine. Yet, I experience extremely poor performance on my system when others with similar, lesser specs experience better or smoother performance.

I have read the BF2142 and BF2 tweakguide at tweakguides.com and optimized everything but i'm still getting crappy performance.

I have Dynamic Lighting and Shadows to low and have tried off, and light to low and still my performance is basically the same.

I tried using the presets to low, medium, and high and I get bad performance on all of them, roughly only gaining 2-3fps by going down a preset.

Now, I know that this cannot be, how? Others report much better performance.

As an indication as to how wrong this is, is I can play Oblivion with med-high settings at 20+fps and that is way more graphically demanding and a not so well optimized direct console port.

CSS/HL2 at runs 35+ FPS with everything maxed, including HDR, 4xAA, and 8xAF.

Thankyou so very much!!!

Well I kinda fixed it.

I reverted back to stock drivers from June 2006.

Thing is these drivers have some bugs in the game which were fixed in later releases.

The game runs fine now with these drivers, but if I use newer ones it runs like crap, but they contain some bug fixes.