I changed my general preference to "Missing check". Then doing a "Check settings" I had 4500 missing movies.
Selecting them all (Clicking on the heading) and asking TVR to Fix the issue (Right clicking on one of the entries), I waited well over an hour with no visual feedback before I gave up and terminated the program.
Starting the program again, repeating the first part of the process, I had some 1300 DB entries still having a deviation in it's setting compared to the general one.
Terminating the program again after a while I had 1000.
Conclusion:
It seems there is no formal problem with the program here, but two aspects;
* Why on earth is it this slow? Isn't it just a loop that contains an update of a field in the DB? The DB is local so it should be near instant to update ...
* Assuming we accept it's that slow, could I please ask for some sort of visual feedback? A progress bar or something that tells us that the program hasn't bombed, but that it is still working hard to fulfill your request.