Filing simply for tracking. Tested with Safari 16.5.1
Page https://en.wikivoyage.org/wiki/Portuguese_phrasebook contains 440 audio players and is very slow to load (well over 20 seconds is not uncommon). Even when disabling javascript in the browser, it is still very slow.
This is apparently a bug in Safari, which I have filed as https://bugs.webkit.org/show_bug.cgi?id=258808