I like having visualizations running on the now playing screen, with the screen on while music is playing and have them set to randomly change every 15 seconds. However I find that they will stop cycling and get stuck on just one visualization.
If I set that vis to thumbs down so it no longer appears in the list the app just picks another vis to get stuck on.
I am using Poweramp build 939 (939004-333c871) on a Samsung Chromebook Plus (Chrome OS 104 Android 9).