SeaDrive 3.0.13, Windows 10: Thumbnails slow to load

When loading a folder full of images on the SeaDrive mounted drive, it takes about half a second for each image to load its thumbnail. This does not happen on the Web interface, all image thumbnails generate quickly on there.

This has happened since Seafile 11, but I believed it’d be fixed somehow with the release of 12. My server is in LAN (1ms latency) and is not under load. Mounting with rclone mount shows the thumbnails, but requires downloading the entire file, so I don’t want to use it unless I have to.

How do I troubleshoot this? Versions:

  • Seadrive 3.0.13
  • Windows 10 21H2 (19044.5608)
  • Seafile 12.0.11