React uses a virtual DOM and is lightweight, which makes it generally faster than Angular in terms of performance. React improves rendering speed and overall performance by updating the DOM only where it is essential. Yet, for more complex apps, Angular's integrated dependency injection architecture may result in speedier loading times.
Both Angular and React are scalable in terms of scalability, however due to Angular's extensive framework and built-in functionality, it is better suited for large-scale enterprise applications.
Angular's opinionated approach and usage of TypeScript can make it simpler to maintain code and ensure uniformity throughout the application, yet both frameworks offer high code maintainability.
You can refer to Intellipaat's video tutorial for a quick explanation of the differences between Angular and React to gain a firm understanding of these two ideas.