Shell Problems Shell Menus ShellExView Utility NirSoft Utilities
CLVDShellExt_20161212_19_38_55.dll - Large delay when right-clicking on Explorer file/folder.

Used this to determone that old WD Shell Extensions were the cause of very slow file explorer and right-clicks on files.
Disabling these extensions fixed the issue.
Then, re-enabled extensions and Downloaded newer WD Smartware software and issue was fixed.

The details of the shell extension that might cause the problem:

Shell Extension Name:  
Filename: CLVDShellExt_20161212_19_38_55.dll
Description: Cyberlink Shell Extension dynamic link library
Company: Cyberlink
Product Name: CLVDShellExt
File Version:
CLSID: {3E2A0A32-6E14-4BAD-AA87-BBB6A75EBFF2}

If you think that you have similar problem in your system, you can try to fix the problem by disabling the specified shell extension. In order to do that, simply follow the instructions below:

  1. Download and run the ShellExView utility from this Web page.
  2. Find the right shell extension according the details specified above.
  3. Select this shell extension and press F7 to disable this extension. After disabling the shell extension, check if the problem still occurs. If the problem still occurs, you should enable back the shell extension by pressing F8, and then try to search for another shell extension that might cause your problem.

This shell extension problem was reported by miked