View attachment 1834903
Took a while to optimized this "scene" and fit it all on 8gigs of VRAM. 20 mins render and 5 mins in photoshop.
Now for the clothes.... well more work.
you can squeeze quite a lot of characters in by reusing as many texture maps as possible. i reuse everything but the diffuse maps. This way you can use both normals and bump on large numbers of characters without sacrificing texture quallity.
When it comes to geometry its mostly about picking the right hair and eyebrows and making sure they are on low subd.
I use Iray Memory Assistant to quickly see whats hogging resources. often times its something stupid like i set the eyebrows on high subd by mistake
could you explain a bit about the lighting, what was done in daz, what was done in post, maybe put a before and after ?