Masahiko Sakakibara explores various strategies to enhance the performance of Angular applications within Ionic 4, focusing on eager loading, preloading Ionic components, and prefetching JavaScript files with service workers. The experiments revealed that eager loading could improve initial render times compared to lazy loading, though it might increase initial bundle size. Preloading Ionic components showed a noticeable reduction in render times, while prefetching JavaScript files using service workers did not significantly impact initial display but could enhance long-term app performance. Despite the minimal impact of some strategies, Sakakibara encourages developers to test different performance hypotheses, emphasizing the importance of reducing time-to-render for front-end engineering. Additionally, Catchpoint, used in collaboration with Spelldata Inc., is recommended for accurately measuring single-page applications (SPA) and progressive web applications (PWA) performance.