Teh support please !

Hi , nice and quick , I have a lot of problem with FPS drops in Halo 4 , all DLC maps are lagging for me and the new Forge Test playlist , all the forge test maps are non playable.

So terrible fps drops i cant play any more … only “vanilla” maps are playable dont know why , any help guis?

sorry for bad spelling i think you will understand. Cheers!