That is how I meant it. My comment was not specifically aimed to your picture / results oc.
From AlPilotX web page, one of the HD Mesh features. So I agree with your approach :
The vector data simplification is less aggressive than in the default mesh (where Laminar needed to do that to limit the overall size of the global scenery). Thus road / railroad bendings are more accurate and the same is true for rivers, shorelines (but where the OSM raw data is bad, this can’t help much either)
Just wondering if one needs these roads overlays when the roads are already on the ortho anyway and they are flat (not like buildings or trees) 