At this point, no. It must be something which causes the ‘changed at’ timestamp of the upper folder to update. Maybe some other software storing its own data into it. Look out for hidden files. Even the Windows desktop.ini could be the culprit, if it gets updated all the time.
I vaguely remember something posted in here, related to that:
It had to do with Windows’ own “library” feature. If you point plex to such a Windows library, it will update the hidden desktop.ini all the time and thus, the folder will get scanned in full every time.
But any other software could cause the same, if it has the audacity to write its own crap among your media.
On Windows, Plex is storing when a folder was scanned last time.
The ‘changed at’ is a timestamp that every folder has on Windows. It gets immediately updated when any change in that folder occurs. The filesystem is doing this automatically.
If Plex now scans your library, and it notices that a folder has a newer timestamp than it had at last scan, it will dive into that folder and scan its content.
If the timestamp didn’t change, Plex doesn’t need to scan the folder.
That is what the checkbox “Run partial scan…” is for.
My movie library scans 10x slower than my tv library. I have a strong feeling its due to folder structure. I might try separating my movie folders alphabetically to see if that helps with performance. Example: \plex\movies\A\Arthur (2011)\Arthur.2011.mkv.
@jamauai Please let me know if you have any luck with this. I’ve decided to live with the long scans; my Movies library is basically always scanning (even with push from Radarr).
