3D Asset .GLTF/.GLB with Substance Material Subsurface Channel Limitation or am I missing something

Hi. I'm testing rendering 3D and seeing that Subsurface materials with subsurface don't produce accurate results. Is this probably a known current limitation, or am I missing a step or setting?

The test render isn't the greatest example, but on the Redshift render, there is clearly subsurface scattering happening, but not on the AE render.