[drinchev]

I would generally say that there is a reciprocal relationship of performance and maintainable code, no matter what you use.

React is a powerful way to build your front-end, but it's power is in structure / code.

In my experience with React, fine-tuning components for faster rendering is always a pain. Too much magic happens behind the scenes and too difficult to keep that in mind while writing your beautiful components.

[pvg]

there is a reciprocal relationship of performance and maintainable code

There isn't an inherent one, it's just that writing for both is much harder than just for one.