the problem is when i play it in my pc its give me 37 fps with every thing maxed out except post processing turned to medium  2x aa at 1680 x1050 resulotion  but when i play it in my laptop its give me 61 fps with every thing maxed out except post processing turned to medium also  2x aa at full hd 1920x1080p ( using my tv of course ) !

my pc Desktop spec is :

Processor: Intel i7 920

RAM : 6 GB ddr3 1600mhz

Graphics: Geforce gtx 260

and my laptop spec is:

Processor: Intel  Core 2 duo T9900

RAM: 4 GB ddr2  800mhz

Graphics: Geforce gtx 260m

whats the problem i dont know so can anyone help me ??

.. know that other games work fine in my pc except this game.

where is the IT people in this site !!

oh i forget to tell Vsync: off  for both pc and laptop