Bug 475033

it was already slow, but now it's way too slow after last upgrade to 5.27.8/ 23.08.1

directory preview is already disabled and opening a drive or device takes long long time to show the directories or files
once with the files in detail view, selecting all takes also a long time, mouse right click is disabled until all items appear, selecting cut/copy also takes another long time

no error in the logs, I believe it has to do how the thumbnails are being created
funny is that after they are created and so long as you don't close dolphin, the once opened directories open normally fast 
more funny, after closing dolphin the access is slow again even if the same place was opened some minutes before and the configured file preview, thumbnails in this case, becomes detailed view, switching to thumbs then they open quite normally  

Date Photographed is also still empty
complete exif data is in the files and can be seen normally by any external, not kde program