I had a little fun with this today. The one thing that really stood out to me was the AMAZING performance. And this fantastic forest level they had as an example...it was great!
Submaterials should be minimized as much as possible on production, but it's all a matter of balance. Having different sub-materials can also help if used well, like if you have a submaterial that doesn't need shadow casting, just turn off shadow casting in that submaterial, you'll save drawcalls that way; You can also…