HELP LOW FPS Low graphics card fix

Ok I can run the game but when I get into it I have low FPS I know my graphics card doesnt meet the requiments but I was wondering if there is a way to make it work.

Minimum: NVIDIA GeForce 8500 /ATI Radeon HD 2600
You Have: ATI Mobility Radeon HD 4200 Series

                req mine

Icon Pixel Shader version 3.0 4.1
Icon Vertex Shader version 3.0 4.1
Icon Dedicated Video RAM 256 MB 256 MB

If you turn off every option, lower your texture quality all the way, and run without AA, you may be okay. We did tests with an ATI 3650, and it ran pretty well with most things off, actually. But a ‘Mobility’ chip tends to be much less powerful… so it is very hard to say.