I don't know how much I trust that source. Maybe they were talking about lightmap baking but any system that incurs more than a 2 minute cost for testing a twea

I don't know how much I trust that source. Maybe they were talking about lightmap baking but any system that incurs more than a 2 minute cost for testing a tweak is going to kill any chance build a meaningful game. Game design is built upon rapid iteration and anything in the way of that will kill your title.