Thanks for the report.
Without more info / settings / videos, it seems a device / GPS issue.
Try a different location service, Kalman filter, animated location, etc.
Also see:
Enable or not the strict route following:
- Kurviger PRO: Navigation, Simulation, GPS Recording, Screen Lock, Rerouting, More, Offline use [Kurviger Knowledgebase]
- Kurviger PRO: Navigation, Simulation, GPS-Aufzeichnung, Displaysperre, Rerouting, Mehr, Offline-Benutzung [Kurviger Knowledgebase]
See the documentation (and discussion):