Album Recognition/Sorting Issues

Many/most of my albums are recognized and matched up perfectly, but a few of mine become hellacious sorting exercises. Usually, the problems are in encountered with the multi – CD set. Roon will occasionally botch the matching job royally. In particular, I note that it does not seem to make use of the track times, which for a limited number of trucks, is often the unique identifier. Is there any way to search for track times instead of whatever it is using now? Does Roon control the search algorithm?

Related question: how does one specify a local file for artwork? It asks for a URL, and not a path.

I know the likely culprit is poor tagging or metadata. But, I have seen albums that have virtually no tagging get processed without a hitch.

Thanks for any help. John