There must be something wrong with quite a lot of hardware then. My windows laptop at work took > 20 seconds to open the right-click menu on the desktop.

During the wait the entire desktop background went black along with the icons then it came back. I was actually trying to get to a setting to set the background to a fixed colour instead of an image in the hope of speeding the machine up.

From a UX experience there was zero indication that it was trying to do anything during this time.