On this video, it shows RealToon URP use an Object - Environmental shader, yes all the material object and environmental models are using RealToon shader.
It is running at 8K UHD resolution.
The project - scene uses the RealToon Post-Processing "DeNorSob Outline".
The Object - Environment does not use the on shader outline.a
Get RealToon Shader (Unity):
https://assetstore.unity.com/packages...