@heady lichen
Xbox series S
The game is liable to crash when you go into inventory/relationship menu (the split second between button press and menu open, it locks and crashes).
Cutscenes can cause a crash.
End of day, game will state saving game then crash and close out, leaving you with an incomplete save and having to redo the day.
Festival days have a chance to crash on mini game or event completion.
I do have a soft work around that kinda works but I don't count on it. But simply at the beginning of each day (if the game actually saves) I quit to menu and reload. I've noticed I can get I reasonable day in without crashing, provided I'm not doing too much of anything and finish my day by 6 or 7pm. Seems like the bigger the day, the more likely it'll crash at save. Festival days are the worst. I've found if I want to make it through a Festival day, I can't do anything (farm/ranch) pre or post Festival, also while having to sacrifice by doing only a portion of the mini games at the festival, sometimes not even completing the festival.
Granted that's not what anyone wants, but for the interim it'll let you somewhat enjoy it, you just can't overwork the day unfortunately, netting you less reward.
Memory leak somewhere?