Hello I just figured out that if I keep the phone in the hand while driving and move it a bit the map will follow instandly without any interruptions. If I place the phone on the seat and car is driving smooth it stops working. Picking it up again and move a bit map is moving again. In the debug mode I can verify this behavior. As long I am shaking a bit (should drink more beer) the phone the movement is detected and it works. So driving on the motorway without bumps might stop the map moving. Hope this info helps.