I’ve been having the same issue with nearly two second freezes when opening a profession window. I have deleted the cache folder, disabled all addons (on an alt I don’t care about with a profession). The freeze is a little shorter, but still there.
If I leave a profession window open I can switch between professions quickly without any freezing. Sometimes I can open a profession window instantly when a character logs in, then it goes back to the near two second freezing.
I have also noticed similar occasional freezes when I arrive at the character screen. When logging out my mouse cursor changes to the busy animation for a few seconds. This issue has been going on for a few weeks.
I have run a scan and repair which did a little downloading so something was.. done? The logs don’t show any changes.
I too am running World of Warcraft on an SSD along with the Battlenet launcher, Discord and nothing else.