Humble tips for the Waze developers:
- if possible measure response times from the system. If they go out of bounds or no response, perhaps:
- reduce the amount (reduce framerate) of mapdisplay data
- reduce the number of calls per second
- or stop sending mapdisplay data to CarPlay.
- stop showing the map altogether and only show lane/direction arrows with exit names/numbers in these cars
- Perhaps there is a function in CarPlay to clear the buffer and resynchronize the display to current position;
- suggest that users should not use CarPlay in these cars for navigation.

Hope this helps you to combat the issues.