When clicking the Link tool, or from the Link tool, clicking "Browse Server," or Create table, or Add Image, WYGWAM freezes for somewhere between 0-60 seconds. This just happens on the first clicks; subsequent clicks work fine.
This only happens on Chrome; FireFox is OK.
It's also only happening on EE 5.3.0 / WYGWAM 5.0.3; my EE2 site is working fine.
Any ideas on what might be going on?