Which brings up more questions:
Lumen does not support Landscape currently so I am wondering if the Landscape contributed to the lighting for the snow scene.
Also Virtual Height mesh currently does not support collision so maybe they have some sort of tech behind the snow deformation or they do not need collision to get the snow deformation to work?
I am wondering if we can be able to add virtual height mesh to very large static meshes that cover a large area rather than using Nanite especially if you have some sort of uv setup with multiple uvsets for those very large static meshes.
It was definitely nice to hear from the devs on how they did the snow among other things.