I have seen a bunch of issues with music ratings:
- the already reported that ratings are applied to the same song across albums (even with worse specs etc) - here one can work around with the “Duplicate” mood method
- something new: rating one song of a CD changes the rating of most other songs on that very CD
The second items is rather disturbing and cannot easily be fixed with moods.
Is there any chance that Plex is working on a better rating support system?