by Leon Stringer.
I'm encountering an unusual issue in a Moodle 4.3.1 instance (build 20231211).
That's four months behind on updates. If you're experiencing problems it's best to have all available fixes before posting to these forums.
... the page takes approximately 1 minute to load.
and 20 seconds:
These are both suspiciously round numbers which suggests some network timeout. Have you got a plugin that's communicating with a third party service? Try enabling debugging, then edit an activity so the delay occurs, then check the PHP error log for any messages reported at the same time.