Low memory chams.

I have this hack it has chams, cross hair, and no fog. And for some reason when I inject the .dll CA starts lagging like crazy, even when the hacks are off! At the loading screen after the intro the guy running lags too. I removed textures and lowered appreance settings to increase performance. Still its laggy any way to fix it is there something wrong with the coding of the hack? Oh and that hack also makes CA crash after 2-3 games and it shows the, the intructions at 0x0000 or something.
Any help?

Ah. It's hacksheilds fault... I tried every way possible for actual chams and they still crashed randomly in game. You will need a different hack.