Mirror's Edge ATI PhysX Problem

[tanmoy_Siliguri]

I have Palit ATI HD4670 512MB DDR3 graphics card.It can run Mirror's Edge(1.01patched) very smoothly on high setting with anti8x but without physx...if I enable the PHYSX option then the game became totally unplayable..WHY?..though I know that ageia physx is mainly supported by geforce gpu...what abt those who dont have nvidia gpu?

 

[Ethan_Hunt]

You answered your own query. Those who don't have Nvidia card will suffer with poor frame rates with PhysX enabled.