With regards to the ‘simple interiors’. If I understand correctly, that means you can’t have ‘interior’ dungeon caves, and that you would need to part out the surrounding walls, floor and ceiling of like an underground mine and then re-create the room out of those pieces.
What does lumen do in situations like this where the meshes are effectively 1 sided? Does it still render the back faces into the surface cache or is there a way to restrict the scope of the surface caching?