>>It's strange behaviour. When you're on LTE, I guess you're also driving, so the only other thing that is "consuming" MCU resources is probably the navigation (due to car moving).
One thing I changed a while back to "relief" the MCU1 is to use satellite view. The "normal" map view is more demanding.<<
My car screen gave the satellite mapping until about four days ago then only the map-type view. I did nothing to change it - is there a selection or is Fremont to blame?
There is the usual selection icon to toggle between views but could it be your premium connectivity has expired?
Satellite view is part of it.