I have some issues with the UE4 shaders. I don't think the right shaders are used when I import the fbx file (Auto Setup for Unreal  V4.23). The skin looks very shiny and I don't see the eye shaders as demonstrated in the videos with pupil and sclera settings:

For me the shader looks like all the other RL shaders (base color, blend, displacement,...).

OK, I guess I found the two issues. For some reason the eye shader was not set to the "Digital_Human eye" shader in CC. Now I have the shader settings. 
Deselecting "Import Textures" during the fbx import seems to have solved the shininess problem.