Hello! Me and my friend had the same problem as a few others on this forum: halo infinite would load up but once in the game the menus just kept on loading. We couldnt even change armor or access academy.
The game would however work perfectly once killing hamachi in the task manager! My suggestion if you have this kind of problem is to kill hamachi and similair tasks in the manager!
I really hope this helps so you can enjoy the flight!