Horrible lag?

So I’ve been playing Halo 4 since day 2 of its release and there were a few hiccups with lag and such, nothing major. Now, as of yesterday, I’ve been getting horrible lag to the point of making the game unplayable causing what seems to be about 1-2 FPS. Anybody else getting this/Know what’s going on?

I get lag quite often, its annoying to be rubberband assassinated or to shoot someone 8-9 times with no effect.