Overlays slow down Locus to unusability
Following joelec's advise re. overlaying vector maps with 100% opacity, I built SQLITEs with MOBAC.
Scenario 1: SQLITE goes to zoom level n, zooming further blures more and more
Scenario 2: SQLITE goes to zl n, plus one (!) transparent tile on zl (n+1).
Following joelec, this should show the underlying vector map, but Locus practically freezes instead.
In fact, the whole story and discussion about raster world maps can be resolved if you switch off overlaying if current zoom level goes beyond the max zl in an SQLITE.
Happy users, peace on earth, and Petr can do better things than fight this outdated dragon :-)