This product includes my asset master material, which I use in most of my assets. You can install this in your project to consolidate all compatible assets to this single master material. You can also use this standalone as asset master material for your own project.
Uses virtual textures and supports texture maps for specular, roughness, metallic, displacement, bent normal and ambient occlusion. Additionally supports up to (currently) 8 mask channels, which allow to tint and manipulate specular/roughness/metallic of a masked area of the used textures.
You can find a template and export preset for Substance 3D Painter in the additional files, which are preconfigured to export all the necessary texture maps for this material.