Windows 10: Right-click menu/"My PC" slow after copying files

My Windows 10 64bit PC acts weird after copying/moving a large amount of files (say maybe 75GB or more). I can run my PC for days and it's fine, as long as I don't move/copy lots of large files. I can copy files for a while, but after a certain amount of copying, the right-click menu takes a good 20+ seconds to open. If I right-click any file or folder, the small blue circle just spins while it thinks about it, then finally the right-click menu opens. Also, opening "This PC" takes the same amount of time (20+ seconds) to show the drives with the bar indicating how full it is. And this happens until I reboot.

As soon as I reboot, it's fine again. Right-click menu comes up quick, and explorer works fine, and opening "This PC" instantly shows my drives. But start moving/copying large files again, and suddenly the same thing starts happening again.

This has been happening for a couple years and I can't take it anymore. What can be causing this? I have 16GB memory.

I have Kaspersky free anivirus running but it happens when it's disabled too, and I used to have Avast and the same thing happened then too.

:)

 

Feature suggestion: Add right-click menu

Suggestion: Please add a Windows 7 Jump-List and/or right-click menu to the GPU-Z icon in the Windows taskbar. Possible menus in it would be "Exit" and "About GPU-Z...".
Maybe also "Switch to tab 1/Switch to tab 2/Switch to videocard 1/Switch to videocard 2" too.
Examples of programs that have such menus are ICQ, Skype, AIM.

NOTE: It seems for a right-click menu, Windows 7 is not needed - it works on WinXP and Vista too.
But even a Windows 7 Jump-list may be good enough.
What do you think?

 

Java.nio.file - Copying files

You can't copy a folder, thats why it generates an exception (you are trying to copy a folder using a copy file function).
You probably need to list all the files inside that folder and copy one by one

 

Java.nio.file - Copying files

Issue was the above, so thanks temp02.