OK so in the end it was an easy fix, just not quite the one I had tried - just do this:
Use the start menu search for mouse and find
change the mouse pointer display or speed t480mouse2.png
You have insufficient rights to see the content.When you are at this page tab:
t480mouse1.png
You have insufficient rights to see the content.untick
Enable TrackpadAnd the problems should be gone but the mouse and trackpad still work fine..?