I don;t notice any framerate drops in the campaign or spartan ops. I notice a ton of lag in spartan ops co-op and some lag in war games.I don't notice any framerate drops in war games either.This game pretty much stays at a constant 30fps at least 95%-100% of the time whenever I'm playing..I notice framerate drops in multiple modes in reach.I don't know how you guys are able to detect framerate drops when you play halo 4.Is your halo 4 disc installed.I sometimes notice weird framerate issues with cutscenes in spartan ops, but that it is.
Same, I never get low frames.