Cursor too large

Hi guys. New here.

So I have a new laptop and bluetooth mouse. When I use PP on the laptop screen everything is perfect. But when I use PP on my 27 inch Benq screen I have an issue with the mouse cursor. It is fine and the normal size when it's just the arrow moving around the screen, but when you go to use the cursor to say trim a clip or drag a clip up and down, the icon become large until you have completed the move or task then it goes back to the normal sized arrow.

Any ideas on what's happening and how to fix it ?

Cheers