This. My last contract was working on digital TV UI software that was build using nodejs, so we did a lot of work optimizing our code and architecture to reduce

This. My last contract was working on digital TV UI software that was build using nodejs, so we did a lot of work optimizing our code and architecture to reduce latencies and load times. I ended up going down the rabbit hole of how v8, libuv and node's GC work. It was a great learning experience. You really can influence your app's performance if you have the attitude and determination.