How does Roon determine “best” Artist image?

How does Roon determine the ‘best’ Artist image?

The main problem is finding Artist images to start off with, rather than choosing between them. I don’t know how Roon resolves a choice of Artist images. I suspect it chooses the highest resolution.

There is good discussion of Artist image improvement in this thread.

I had a good discussion with Mike, Noris in this thread, nothing resolved. However, as I pointed out earlier Plex along with others have working solutions to avoid a box with nothing in it.