React Native, a framework designed to bridge web and mobile software development, faces performance challenges such as single-threaded limitations, slow navigator transitions, and memory leaks. The architecture of React Native involves three primary threads: the UI thread, the JavaScript thread, and the bridge that connects them. While both UI and JavaScript threads are individually fast, performance issues arise during communication through the bridge, particularly when handling large data transfers. The single-threaded nature of React Native can hinder apps with simultaneous features, like streaming services with live chat, though extensions in Java, Swift, or Objective-C can mitigate this by enabling multithreading. Slow navigator transitions occur when animations on the JavaScript thread impact rendering, which can be improved using React Native’s InteractionManager API. Memory leaks, often due to improper handling of closures, can be addressed by ensuring variables do not retain unnecessary references, which prevents the Garbage Collector from deallocating memory. Despite these limitations, React Native remains a robust framework that allows developers to create cross-platform mobile applications with JavaScript, and tools like LogRocket can aid in identifying and resolving performance issues.