There are a few routes to take;
1. Contact the person who created the hack on reducing the lag in the way that they actually created the hack.
2. Disable some features of the hack .
3. Counter the hacks lag by reducing the pograms you are using while playing Crossfire or, By Lowering the graphics In game.
In the future, Please do not request help for hacks which are not created by MPGH Users, Thank you.