In general…
Well in physically based materials, It doesn’t exist any material like “metal 1/roughness 0”
In this case, we are talking about realistic materials
For sure everyone knows that the skin (color, reflection, imperfections etc…) is not the same in the whole body:
is just impossible to do this using just values… and is not what I say… is what the PBR manual says…
It happens exactly the same with whatever except in a few cases (as a perfect mirror)…
And I respect… but I explained the problem, the solution and I did a suggestion. So don’t tell me that.
It happened the same for me too, 3d world and videogames are changing fast haha
And this is my last reply, read the manual, sure is a matter of few hours for you!