So I didn’t get Halo 4 until after the new year, and didn’t have any connection problems at all until a couple of days ago. At first I thought it was my internet connection so I tested it (40.4 download, 4.6 upload) and found that isn’t a problem. Then I tried playing Black Ops 2, and had no problems with lag of any kind. Popped Halo 4 back in and I can’t complete a matchmaking game without it booting me saying I’ve lost connection to xbox live. What gives? Everything I’ve read about this problem appears to have been taken care of before I even bought the game.
Still looking for some help on this, haven’t found anything other than “uninstall disc 1” which I don’t even have installed.