there's a new kind of code optimization! optimizing for POWER CONSUMPTION! - lower frame rates! - tighter code that runs less! - cached data vs recalculating constantly - pools, memoization, "dirty flags" this is so rare, imagine re-writing an algorithm to go SLOWER or do less
This is kind of a thing with sustainable development. It's popping up in research for web development but probably won't be a trending topic of any substance for another few years. Game dev will probably be 5+ years after that.