Help with slow boot and shutdown of 16.04

So in both cases Ubuntu MATE is the only OS installed on the boot disk - correct?
If so possibly GRUB menu is showing and waiting for input [10 seconds]

Please paste the output from inxi -ACDMNSG one of your machines [we'll work on 1 at a time].

In order to use this command enter a MATE terminal by either:

  1. Accessing menu Applications > System Tools > MATE Terminal
    or
  1. pressing Ctrl+Alt+t keys simultaneously

use the code tag </> [see below] to mark the output

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