In this video, I go over all the things I consider when preparing my Archviz 3D models (Structure and furniture) for both lightmass and lumen. They will make your life a lot easier when working inside Unreal Engine.
topics:
Unit Setup
Origin of the World
Structure Models for Lightmass
Furniture Models for Lightmass
Structure Models for Lumen
Furniture Models for Lumen
Topology
Material ID
UVW Mapping
Pivots
Naming Conventions
Layers
Flipped Normal
Instancing
Missing Textures
https://dev.epicgames.com/community/learning/tutorials/YaYm/things-to-consider-when-preparing-archviz-models-for-unreal-engine-5