first of all thanks Epic for this incredible next gen real-time upgrade and allowing everyone to early access it!
After a day of experimentation I came across some problems or rather questions regarding the Lumen reflections. Yesterday I tried to create two metallic objects with a 0 roughness surface and placed them close to each other. I noticed that both these objects have problems reflecting each others surface and are shown as a rather non-metallic rough material. However if I look slightly from the side the reflected surface is displayed properly.
Therefore I was wondering if this is a limitation of Lumen or perhaps a real time rendering (most likely) issue in general.
Another problem I came across was the proper reflection of the skeletal mesh (third person template character). Static meshes are shown properly in the reflection whereas the character was rendered black. However when I slightly angle the camera, the character is rendered with the proper material.
Image to visualize the problems: Imgur - Reflection problems
So I was wondering if there is a particular solution to this issue or if there are perhaps any plans for the future to look into this issue?
PS: A ray tracing reflection however solves the problem of reflecting skeletal meshes.