is it possible to change the instructions to a left/right kind of way instead of the 'head East, head West' type?
Does this information display on the top edge of the map? If so you may find that if you turn off the data field in the map display then it will stop. I have a similar one on the Edge 800 and I got rid of it.
On the Edge 800 it will tell you to turn left or right, but to do so I have to download a course from Bikeroutetoaster and tick the option "add course point warnings" and also give it the distance that I want to be prewarned. I do not bother with it because I find on my model that a black box appears in the center of the display and covers over the map at the crucial point of turning, so I prefer to just follow the arrow on the map