Hello,
running Emby 4.5.4 on a QNAP NAS (installed the QPKG). I do have a large collection of photos. They are organized as follows:
photos
- album-1
|_photo-files.jpg
- album-2
|_subfolder-1
| |_photo-files.jpg
|_subfolder-2
|_photo-files.jpg
For one folder, the thumbnail generation is way of . e.g. 15000ms vs 50ms in other folders
Here is a log snippet of the "bad ones" after enabling debug logging - there are a lot of those entries.
2021-01-20 12:23:28.818 D