I use the Locus World base map from the Locus Store for improved speed at low zooms when using vector maps. I note it does not switch in if I am using a Mapsforge v4 map. :(
Settings - Offline Maps - Preload global map ...
works for me, but I do not use the Locus world map, as you may guess :-)
Good day John,
you are right. World vector map from Locus Store is built-in into improved MapsForge V3 system and is rendered little bit different than system suggested by Michael (with automatically selected optimized theme and some other minor improvements).
Anyway, I will have to ask for little patience. For some time, I work on improved system how will Locus Map handle maps and one of the changes will be united system how world map will be handled. And correct (and only) behavior will be as suggested Michael. But you will definitely notice this change (hopefully somewhere in February). Thanks for understanding.