React Performance Problems Usually Come From Your Architecture

Over the years I've worked on many production React projects, and I've seen the same story repeat again and again. A team builds a feature, the application grows, performance starts to drop, and eventually React gets blamed for everything. Someone says React is inherently slow. Another developer suggests switching to a different framework. Someone else jokingly proposes rewriting the whole thing in plain JavaScript. But in most situations, the issue isn't React itself. React is actually very efficient at updating the UI. What tends to slow things down is the way an application is structured. The architecture built around the framework often creates unnecessary work for React. For example, it's very common to see component trees where almost everything re-renders after a small change. A single input update ends up triggering updates across large parts of the interface. Another frequent issue is overly shared global state. When half of the application subscribes to the same store or cont