We're aware of some issues with your game crashing so I've made this megathread to collate the current threads.
If you are posting that you're having this issue can you please let us know the following information:
Which Xbox console are you using?
When does the crash occur? (On launching the game, whilst matchmaking, whilst in the game, other (please specify))
What happens when you crash? Is there an error code, does it kick you to the dashboard, or do you go back to the main menu?