halo 5 game keeps crashing

Hi. so when i was playing with my friends, i would play warzone, custom game, and arena. about half way through the game the game sends me back to the screen (like if im playing warzone it would send me back to the warzone and warzone assult area.) this is annoying because after a few times it bans me from playing because of this. please private message me your ideas on how i fix this. my xbox live is ok, and ive tried unplugging the router many times. it wouldent work. - JustRektYou