O.K., thanks for your response.

Problem 1 (traffic alerts) seems to be on my side, after some other configuration the problem has gone ... so sorry for that.

Problem 2:
I'll try mz best to capture some data, but it will be a tricky job while driving.
Some more findings on my side:
Turns are most of the time not exactly calculated, about 100-200m away from the original turn. This could be a problem of Greenflag map data - I will check for this.

While following a route and being in sync with gpsapp I can see that when driving on a longer part of the route (10km) through curvy areas then gpsapp looses contact to the directy calculated line between the last and the next turn. This happens if I leave the direct line for more than 100-200 meters. In this case also the compass function of gpsapp stops working. When touching the route again, even crossing the route gpsapp gets not back in sync.

Try to fing more data on that.

Juergen