I listen to a lot of smart playlists based on ratings, and I use the grouping field for tags. For example: Grouping Contains "Mellow", Rating is greater than **. That playlist has thousands of songs.
Since upgrading to iTunes 12.2, I'm seeing some ratings with black stars, and others with gray stars. Apparently, the gray star ratings are automatically generated by iTunes. I've never seen this before. To make matters worse, songs with zero ratings are showing up in my smart playlists because iTunes assigned them a gray rating.
How do I get rid of the automatically generated gray ratings? How do I prevent iTunes from ever automatically generating false ratings again?
I've got over 30,000 songs. I don't want iTunes destroying my ratings system with false ratings! Just because I like one song on an album doesn't mean the whole album is great.
Additional info: I'm not using iTunes Match (my library exceeds the 25,000 songs limit). I did check "iCloud Music Library" yesterday while signing up for Apple Music, but I've also tried turning that off and it doesn't get rid of the gray/guess/false ratings.