Every time I start up the campaign, since the big team battle update, it crashes fully the Xbox home screen and has been getting worse. First if I got a checkpoint then died the game would crash. After a few tries the whole campaign crashes, old saves, new games, anything. Now I cannot go past the title screen, I can open to the next screen for a few seconds and then it crashes. This is not just me for the Halo subreddit has quite a bit on this.