Google Calendar app constantly missing notifications

Since I got the new phone Google Calendar app on it had been abysmal at making notifications it is supposed to. Most of the time they just never happen or happen late at the wrong time. Sometimes opening the app triggers some overdue notification from an hour ago. As far as I can tell Calendar is the _only_ app that has any issue with notifications, all notifications from all other apps work perfectly. Is there anything I can try to do to knock some sense into it?