Gwenview locks up for 30 seconds to several minutes when accessing a CIFS/SMB mounted network share, even if there's just a couple dozen images in it. Sorting by name. Dolphin can read and generate previews from the share fairly fast, and I'm also able to read with >40MB/s.
More info: using Gwenview in Browse mode, generating thumbnails for a folder with 72 images (roughly 3.5 MB each) in it, takes about 20 minutes. Monitoring the SMB server, there's barely any network activity during that time.
Hi, I can confirm this really annoying bug, using Gwenview 19.08.0 on KDE neon 5.16 (all updates installed). Thanks in advance and for your awesome work guys; KDE is still the best :)
*** Bug 412290 has been marked as a duplicate of this bug. ***