They all work for big companies, and in big companies you get paid for features not for fixes.

AAA games will never be optimized. They’re too big to care, and nobody is accountable for it.

This is why I quit big companies. I love optimizing. I love building flexible software, that’s fast, clean, and simple. But that takes time and you won’t get it, you’ll get “what’s the minimum we can do to get this feature out” or “we can always come back to that” and it’s back logged forever. If someone else pushes out a hacky MVP of spaghetti code that gets to market faster, they’ll go with that, even if it costs months of dedicated fixes.