LrC stalls while moving photos between folders

I have been working on cleaning up my LrC catalog and working to make sure I have everything backed up. During this process, I discovered several photos had been inadvertently moved to a folder nearby the one I intended it to go in. However, when I attempt to move those photos to the appropriate folder, LrC completely bogs down, working for over 12 hours with the "operation in progress" bar never budging. What is really confusing is that soemtimes one or several photos will immediately go into their new folder, no muss, no fuss.

I have tried quitting LrC, uninstalling & reintalling LrC, renaming the photos, renaming the folders, restarting the computer. Nothing seems to move this along.

I am working on a Mac Studio with Apple M1 Max chip running OS Sequioa 15.1.1; and I am using the most recent version of LrC.  I've been a Lightroom user for many years and never run into this issue previously.

Does anyone have any ideas on resolving this?