It took most of the working day to load the albums - 5 to 6 hours.

Editing the albums one-by-one is not really practical given the numbers involved - since I'm very happy with the underlying metadata on the 2000+ unidentified albums I doubt whether I will bother.

The only ones I will fix are those where Roon has misclassified an album (eg split up a double album or a box set into different titles/ artists etc) - these do not form part of the "unidentified" portion and are therefore much harder to find, but once found are easy to fix by reverting to basic user metadata. Not sure how many of these there are but it is certainly is in the hundreds.

Streaming: Roon, NUC, QNAP869 NAS
2ch system: dCS Vivaldi, Audionet Stern, Audionet Heisenberg, Magico Q1
Retro system: 101/104/105, Red Rose Spirit