mxs stops responding!

[Matt#805]

OK. I have a ATI 5650 graphics card, and my laptop is a hp pavilion dv6 3006tx. It runs high performance games like GTA iv easily in mid to high settings. But a strange thing happens...
When I change my graphics properties to 'high performance', and run mxs, the game just crashes. But when I change the graphics properties to high quality, mxs runs perfectly fine, but after 3 consistent races, the game just stops responding. Sometimes an error comes up saying 'Out of virtual memory.' I have reformatted many times with windows 7, but the same things keeps on happening. Can this problem be fixed? I am sick and tired after every 2 races quitting the game and re-opening it again.
Thanks

[jlv]

ATI would have to solve that, not me.

[Matt#805]

Ok thanks for the reply though!