I can't get them to do anything either, it looks like height maps should do something though because they are available to activate/deactivate in the PBR shaders.
I'm happy to share the good news with you guys, we just started a partnership with our friends from GameTextures.com! What this means is that the next update to Substance Designer will be shipped with 50 high quality PBR materials from the GameTextures database along with our own new PBR base materials library. It also…