Why is this problem in Windows Explorer for many years now, across various Windows installation instances, updates and versions (Vista, 7, 10), across various hardware (SATA 7200k, SATA SSD or M.2 NVMe SSD, 3 various SSD drives in case of the last), encrypted as unencrypted drives as well (drive C: in the demonstration video is unencrypted)?)?
While all other software (Total Commander used in the demonstration video) is working fine with the disk, including file moves, creating/listing directories (folders), displaying pop-up context menus, however Windows Explorer fails to do so, needing tens to hundreds of seconds for each of these operations to execute. Is it possible to set this behavior differently or switch-off this feature entirely?
Problem demonstration see video: https://www.youtube.com/watch?v=yUTXhP7Bk_0
Addendum:
Unfortunately not even Process Explorer revealed any discrepancies in the threads/load of Explorer (so it seems to be really an intended delay-feature of the Windows Explorer).
Moreover, while I was recording the second video below, the other part of this problem manifested itself (you may find it from 5:30 in the video): randomly, without any reason, this problem stops occurring and Explorer works fine until another PC restart/wake up, or after visiting a different folder at random (also such a folder, where there was no change of content data, so the thumbnailer/indexing service could not be fault). So after 5:30, while I was performing the very same operations as previously, Explorer suddenly works like a charm (for a few moments at least).
Addendum video: https://www.youtube.com/watch?v=M1DyrSIoNuM
