Lighting mod problem...

[Technique101]

Hey guys. Well i just put in the Next Gen Lighting thing from Babylei and i went into the game, and the game lags so much now. My computer is more than good enough to run it (P4 @ 4.6ghz, 2gb ram, geforce 7950GT). I do have AA and AF set to highest in the Nvidia control panel, but i mean, before i added the lighting mod, the game ran perfect. Anyone know whats up?