When you back from post-carnage screen, there is more than 15% chance to freeze in next searching screen. This issue has been there for more than 6 months, wth 343 hasn’t fixed this stupid problem.IIRC from discussion during a social stream (but please feel free to correct me if this recollection is not right) this is in the same 'batch' of issues as the first game auto disconnect from searching, where a factory reset seems to fix the issue at least temporarily, which implies its a client-side caching problem: therefore very difficult to identify and fix
Delete all game saves, delete MAC alternative address, remove game to external, no luck. Try reset later. 343 should detect the error logs, analyze and remove the cache caused the freezing automatically if these issues happened, not everyone has an external hdd to backup 1TB games. Some of my friends have the same, only Halo 5, other games ok. I call 343 lazy developer, gave up H5, all support resources to fix their devastated MCC.