Thanks, Dead Eye, for the tip. I usually do copy to .iso because I can burn a DVD if I ever need or want to. Having a Full Disc copy is often needed depending upon its subtitles. For example, "The Revenant" has subtitles for French and Indian dialog that disappear if I just do a main copy.
I might try a 2-disk set and see what problems I have. I really wish we had more manual control over the Fix Match function. But simply adding a disk number could solve a number of problems, especially when dealing with series-type movies.