Explorer freezes when renaming/deleting folder: LanmanWorkstation

Hello,

I have been having this issue for quite a long time (even when I was using Windows 8.1 before upgrading to 10).
Basically, Explorer freezes for ~7s when I rename/delete/move a folder. It even shows "Explorer not responding" in the task manager after few seconds.
When deleting/moving a folder, the progress bar is stuck at 99% for several seconds.
The freezing does not happens all the time (I would say 80% of the time). It seems to appear randomly.
It happens only on folders (not files).
Also, it never happens when copying folder.

I did my homework and finally found the culprit : the "Workstation" "LanmanWorkstation" service.
It runs as "svchost.exe -k NetworkService".
Disabling this service fix the Explorer freezing... but this is not a viable solution since (I guess) my system needs this service running.

During the freezing, there are no excessive CPU load or memory/disk/network access.

Does anyone has an idea/solution ?

Thanks.

Nobody ?

Just a question: are the files and Folders on a remote computer, not on your drive? I see a similar situation [but not as long] when working with my NAS drive.

All the files are local.
No NAS.

Still nobody ?...