Today we look at the role of Optimization Tools and
Methodologies for Geometry in the Unreal Production pipeline.
Your Unreal scene is made up of many elements. Chief among them is the geometry that literally makes up the building blocks of your world. To ensure your project runs well on a Virtual Production LED wall, Gaming console, XR headset, or a Mobile device, geometry must be optimized as much as possible. In this guide we will discuss many methods to Optimize Geometry. We will give special attention to Unreal LOD system, and Quad Overdraws.
“Your Unreal Scene should run like a Ferrari: Fast & Pretty!”
https://dev.epicgames.com/community/learning/tutorials/oLO6/unreal-engine-optimization-02