Same issue here. And when I can get it to initiate a loudness scan it doesn’t actually scan the files or generate loudness data. It shows that it’s doing it in the activity menu and in the logs, but it goes extremely unrealistically fast - like 5 albums per second. It’s like it can tell it needs to do loudness analysis for those files but then just loads them and moves on without actually doing it.
Plex dance fixes the issue if I do it on an individual item, but I really don’t want to do that with the whole library, especially given how long it took to do the sonic analysis.
I’m attaching a log file generated during one of these ineffective loudness scans.
Plex Media Server Logs_2022-08-11_14-10-14.zip (3.7 MB)
