If your laptop is only 512RAM with a ATI 6000, then of course
your game will lag.
ATI 6000 can hit a max of only 128MB only, usually 64. And when it
is intergrated to your laptop, don't expect a game to flow. In
fact, you should be happy that with such configuration you can
still play games.
And please switch off your CAP, it is totally GAY