Adjusting Scenery Objects

That's what happens sometimes at 80% of loading the scenery. Is there a way to avoid this from happening?

I am asking because custom meshes within a scenery seems to be ignored when this happens and everything gets flattened.

As an example: LGAV by FlyTampa. It has a custom mesh for the hiway that crosses the airport. After 'Adjusting Scenery Objects' this hiway is at the same level as everything else. I have to go into scenery settings, adjust mesh resolution a bit, then the scenery reloads (without adjusting this time) and the mesh is ok. When flying to LGAV, of course adjusting doesn't take place and the scenery looks gorgeous at once

Thanks,