⚙️Settings for the project

What settings you should have for the project

Required * Plugin Geometry Script enabled. Edit - Plugins - Geometry. This is required for the Roof blueprint and Polygon Blueprint.

Required * DirectX 12 Enabled.

Edit - Project Settings - Platforms - Windows - Targeted RHIs

Required * Nanite Enabled.

Edit - Project Settings - Engine - Rendering - Nanite

Shader Model 6 (SM6) is required to use Nanite assets. Enable this in "Project Settings/ Platforms/ WIndows/ D3D12"

Recommended * Set Lumen for Dynamic Global Illumination Method and Reflection Method".

Edit - Project Settings - Engine - Rendering - Global Illumination/Reflections

Also, you should enable lumen in the post-processing volume: Post Process Volumes contain overrides and artist-controlled properties for Lumen. The settings are found in the Global Illumination and Reflections categories.

How to activate Lumen for your project: https://docs.unrealengine.com/5.0/en-US/lumen-global-illumination-and-reflections-in-unreal-engine/

Recommended * Disable "Use Hardware Ray Tracing when available" for optimization reasons.

Edit - Project Settings - Engine - Rendering - Lumen

Recommended * Set Shadow Map Method to "Virtual Shadow Maps"

Edit - Project Settings - Engine - Rendering - Shadows

Optional * Disable "Allow Static Lighting" - if you want to use the material ambient occlusion with Lumen Global Illumination