Ahh… ok, sorry I misunderstood about that. Yeah, those are excellent questions you raise. Let’s listen to comments from the pros (like you).
Are you going to test some speculars and shadows on the above PG series? Teach/show us what you learn, ok? Perhaps we need to wire-up some light nodes to the box material? Got the docs memorized?
YOU might be the #1 or #2 expert on this new system, at this time. If you go experimenting… please teach us what you learn. thx!