Recently after doing the Windows 8.1 upgrade, one issue I had is when I would right click the desktop I would get the little circle for about 15 seconds before I could see the context Menu. After looking online for a solution everyone said to first update your video drivers. So if you haven't done that do that now.   For me that didn't work. The right click menu also looked very clean as if there was no 3rd parties attached, so I was confused.   Then I downloaded the application "ShellExview