Map fails to refresh as I ride

The map fails to refresh as I ride along, happens at random but so far during every ride. Zooming in and out sometimes help. If I pan the map, it also fails to refresh. 

I've tried to set the details to Less, Normal, More, and doesnt make a massive difference. Also changed the zoom level for map points, etc. 

I toggled trailforks maps off to see if it makes a difference, but didnt as far as I can tell. 

It is as if the processor is too slow to load and then hangs