The video discusses how Flutter is designed to deliver high-performance apps with a focus on reliability and speed. Flutter's use of the Dart language and its ahead-of-time compiler allows apps to compile to native machine code, ensuring fast startup times. By bypassing native UI kits and using its own rendering layer, Flutter achieves fast rendering and smooth animations. The introduction of Impeller, a modern graphics API, further enhances performance on iOS and Vulkan-enabled Android devices, reducing rendering times and memory usage significantly. Additionally, Flutter's transition to WebAssembly for web apps has improved performance, making them faster and more comparable to native apps. The video highlights the use of Flutter for desktop apps, with improvements like moving to Metal for macOS, ensuring native-like performance across platforms. Flutter's advancements in graphics capabilities, such as Flutter GPU, allow developers to create complex 3D graphics, enhancing the visual appeal of apps.