I’m developing a web application for Eminence Technology that relies heavily on real-time data updates, frequent DOM changes, and complex user interactions. As the application grows, I’m starting to face issues like UI lag, delayed rendering, and increasing memory usage. I’ve already tried basic optimizations but they don’t seem enough for larger workloads. What advanced techniques or tools can help improve JavaScript performance, manage memory effectively, and keep the user experience smooth as traffic and features scale up?