Sorry to bring back dead threads, but I have been suspecting this for a long time, just never been able to confirm it for myself.
On Wanikani, review SRS times are bunched into sections of whole hours. So if you do a review at 3:44, it will reappear at 7:00.
It is obvious that BunPro’s intervals are at least smaller, but are there any intervals at all? The BunPro planner script is always just struggling with predicting the right review times, and sometimes reviews just seem to appear out of nowhere. Is this some glitchiness on BunPro’s side, or do you simply just not have any interval sections?