Unwatched filter still fails to provide results when viewing large TV library in PlexWeb

Running the latest Plex 1.1.1.2675 with PlexWeb 2.7.10 on a QNAP TVS-871 with 16GB ram and i7-4790S CPU @ 3.20GHz.

I have an admittedly large library of TV shows and for about a year now have been unable to use the Unwatched filter when viewing the TV library in PlexWeb. Because of the library size, and the fact that much of the content is there for other family members and friends, I prefer to view my library by Date Added with the Unwatched filter enabled then for shows I have no interest in to simply mark them as watched to filter them out of my view. What happens today, as soon as the Unwatched filter is added, you get the little “spinning working circle” and that’s it; it never actually updates to filter the view. I would love for this to work again like it did pre 0.9.12.

Here’s my library stats in case this is related to its size:

Shows: 573
Seasons: 2,060
Episodes: 33,236

I’m willing to provide my database to the Plex support team if that help optimize this filter’s operation.