“In this lesson, we will transform an ArchViz project from a standard walkthrough into an interactive experience by adding multiple navigation modes, improving the lighting, and bringing the scene to life with elements such as characters, environmental motion, and traffic—while also keeping performance in mind.”
https://dev.epicgames.com/community/learning/tutorials/dO65/how-to-upgrade-your-interactive-archviz-project-in-unreal-engine-5