--dem-dists=19884,39768,53024,212096

with 212096 being empty or just having enough data that the device is not actually shading the map?

Basically I think dem on device is only useful from around 5-30km zoom levels (with default detail level). 5km is the lowest that the devices choose if DEM is on auto zoom level, but it will continue showing it indefinitely (at least if no basemap is activated) - so getting the device to show an empty dem to switch of shading would be pretty useful.

Greetings

Felix
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