Bad Cpu usage on windows XP

[rgabriel15]

Well, the game looks good, have nice controls, but the fps are very bad. Im playing on a modest pc:

Core2Quad Q8200 @ 2.33Ghz
Geforce 8800GTS 512 G92 using forceware 258.96
4GB DDR2 800
ECS P45T-A
Windows XP SP3 with everything updated

res 1280x768 everything on max (physx off)

The average fps on benchmark and in-game is 33fps, but constantly dips to 20fps (some parts got 15fps) what is very low.

My complain is: The recommended requirement is a quad core, but the game is only using 1 core at near 100% usage, 2nd at 5%, 3rd at 20% and 4th at 5%, no matter the place, ingame or benchmarking.

Ive asked my friend to test on its win 7 and the game is using all 4 cores at near 70% usage.

Ive tried lowering all the settings to low, disabling AA and Ambient Occlusion, but the fps remains the same. Its a proof of a cpu bottlenecking!

Its a XP bug or marketting to kill win XP??

I want repplies cause im planning to buy this game, but optimized.

[Saberq]

Play it on Windows 7 man...On XP you can use only 2GB of RAM....

[SabreRaz]

If i have only 2 GB of Ram,should i use Windows 7?

[Saberq]

For you it dosent matter.....It will use whole 2GB

[rgabriel15]

Yeah bro i know that, but the game is using only 1.2GB Ram.
My complain is about this bad cpu usage. I'd like to see its using at least 70% on all 4 cores, like my friend on win 7.

C'mon 2K, give some more lifetime to XP and optimize your engine.
Make me happy and i'll make you too (buying the game)