Dark autogen houses

[Wanthuyr Filho 83]

Flying in the US recently, mostly in the northern parts that are covered by snow is showing a rather unpleasant effect, which is the darkness of the autogen houses. I tried several combinations of shadow casting but it doesn't change anything really, but actually the worst depiction is when I am (the camera) facing against the sun. With the sun on my back illuminating the houses upfront looks much better. Just for the record, I'm using Orbx addons for both trees and houses/buildings.

If only the issue regarding autogen was their exaggerated size...

Any ideas on how to make it look better?