[PROBLEM] Metadata not loading correctly or at all for some items

The following is copied from a post I made in the PMS for Windows forum on 4/23/17. As it has gotten very few views and no responses in the past 2 days I’m re-posting it here for higher visibility (I hope). I’ve been searching Google and the support database on here, but I’ve found nothing that even sounds like my problem much less a solution to it, and I couldn’t seem to find any kind of customer support contact for Plex themselves, which is a bit annoying. Anyway, here’s the issue…

ORIGINAL POST:
I’ve recently starting having an issue where some movies and TV shows will not load the proper metadata. It’s not everything, just a few at random it seems, but it also seems to have started happening more frequently. For TV shows it seems to recognize nothing, it just keeps “Episode X” and the auto generated thumbnail, It seems like no matter what I do it won’t load. For movies it will sometimes think that it has matched, but only load the poster and nothing else. In the case of movies, sometimes doing “Fix Incorrect Match” and just re-selecting the same Plex Movie result will fix it, other times that does not work but switching to TheMovieDB result fixes it.
I feel like I’ve tried everything, so here’s a brief rundown:

I’m running the latest PMS version, 1.5.5.3634 (Windows 10 PC)
All of my files are named properly for PMS naming conventions.
I’ve tried updating/refreshing the items numerous times, including removing them from the library, optimizing the database, cleaning bundles, emptying trash, then putting them back, but it still doesn’t recognize them then.
I’ve verified that IPv6 is disabled on my router and on PMS.
I’ve followed the instructions to repair a corrupted database with SQlite3.

And despite all that, the issue has not changed at all. I’ve tried looking at the logs, but I can’t make heads or tails of all that information. If anyone can please give me a suggestion I haven’t tried, or tell me which part of the logs I should be looking at, it would be greatly appreciated. Thanks.

UPDATE 4/25/17: I hadn’t thought of it before, but for the first time since this issue started I tried adding a whole new series (44 episodes, 3 seasons) all at once. It correctly loaded the metadata for the series, but selectively skipped episodes at random. It missed 1 of the 8 season 1 episodes, 1 of the 13 season 2 episodes, and 5 of the 22 season 3 episodes. It also failed to load ANY of the images for the series.

I’m kind of OCD so this issue is proving extremely stressful for me. I’ve put a lot of effort into organized my library and making sure that everything has images (even if I have to make them myself). With all the movies & TV show episodes I have there are literally tens of thousands of files here, so I really don’t want to have to wipe out the library files and load everything in from scratch again, but I’ll try that if that’s what it comes to. If anyone has any other suggestions for me to try other than the nuclear option I will gladly try them…

Kindly keep the same issue in the same thread? It’s extremely difficult to help if you’re creating new threads and expecting others to follow you based on your posting history.

Posting multiple times for the same question, only two days apart, is considered cross-posting.

Please return to your original thread, Collect your log files (with VERBOSE logging turned off) after you reload your metadata for that library, then post the ZIP file you get from Settings - Server - Help - Download Logs .

It will allow us to help you in the best way possible.