There seems to be a problem with the way the C4D integrated plugin interpolates height map data to 8-bit instead of 16-bit or higher.
Even when the Substance is set to 16-bit for the height, C4D is interpreting to 8. I'm using Redshift, and this problem is most prevelant there. I've been through this with the Redshift developers, and they say it is out of their hands, and that the C4D integrated substance engine plugin is the problem.
The only work-around I've found, is to either bake maps from SD or to use SP to paint the materials, thus "baking" them manually.
I've also noticed however that Marmoset Toolbag is what a lot of SD artists use to display their work. So I was just curious if that is being used heavily by Allegorithmic for their marketing materials.
I wouldn't see it as an endorsement by Allegorithmic by sharing that info. I just want to try different things.
I'll see if I can do a comparison render of one of the marketing examples.

Need to get my current project rendered first.
Thanks!