Karoo 2 no longer works for navigation

I make a route with Strava or Switzerland mobility and import it to the Karoo. I then try to navigate. It often starts out ok. Later it gets stuck. I look at the map and it doesn't show me where I am. It shows me where I was 2 minutes prior. If I look at the duration of the ride, the seconds get frozen. I can look at the timer showing 57 seconds for a minute or so. It therefore can no longer be used for navigation. 

If the map is 5 minutes behind of where I actually am, it can not be used for navigation.

If I don't try to navigate a route but I just say navigate to home, then it works.  I'm just talking about 40 km routes drawn in Strava.  My expectation is that this should work. Any ideas?