The Unreal Engine renderer has been refactored in the 4.22 release to pave the way for future improvements in ray tracing efficiency and GPU-driven rendering. Join Epic’s Director of Engineering Nick Penwarden as he details the impact of these changes.
https://dev.epicgames.com/community/learning/talks-and-demos/5K8/refactoring-the-mesh-drawing-pipeline-unreal-fest-europe-2019-unreal-engine