Carpentry way cobblestone - Substance Designer material

A cobblestone ground with little wood pieces I call Carpentry way cobblestone. Material is rendered and enlighten in Unreal Engine 4.20 with tessellation.

Video of the material rendered in Unreal Engine 4

Another shot with a different light condition in UE4

Another shot with a pretty much realistic light in UE4

Material in Substance Designer view

Full node graph

These are detailed views. See full graph for reference.