Well firstly the obvious thing is to zoom in.. if you give it a few tries you'll be able to line up the endurance good and zoom in a lot..
People are able to complete endurance mazes at fast rates by doing the following:
Open control panel > click mouse > pointer options > set the pointer speed faster.
You'll need to be careful with the pointer speed though, if you set it too fast your mouse will literally fly off the screen and you'll just fail every maze.. but yeah you can make your mouse speed faster to complete mazes faster :)