I go a Music Library - one of the 3 not infested with Popular Tracks (after much labor, over a long while) - and hit the Scarecrow Arms/Shuffle Button.
IF there are no Popular Tracks for any Artist in that library Shuffle works as expected - randomly.
IF there are any Popular Tracks - that Artist takes over, then the next Artist with Popular Tracks, and so on.
Plex Dance the popular tracks out of the Library (easier said than done) - problem solved.
I have:
Blues
Rock
Jazz
Libraries, Genre Separated so I can just Shuffle the entire library, randomly. It used to work great - even with the Popular Track infestation - but now Plex has gotten smarter - and made us crazier.
Now my only Library that works as expected is Blues. They won the Acme Favorite Genre Category and got first whack at the labor force (I had also been working on Blues for a while before that, so they got marked for immediate cleanup).