You should receive alerts whenever a member likes or quotes your posts,
I sometimes receive 'quote' alerts and 'Inbox' alerts as much as a day later. 'Likes' almost always appear quickly. Watched threads are also slow to post or fail to post at all, and tags are sometimes quick, sometimes dilatory.
I go thru days on this site where I have to shut the site down repeatedly (the record is 7 times in one day several weeks ago) because pages freeze, or large black bands appear horizontally across them, obliterating anything
under them. From time to time, a page will just turn to blank white space a few posts down.
Pages freeze, stutter, or slow-scroll also from time to time. I can live with that. Thanks for checking in though, much appreciated.