I'm working with this PBR metal texture. I have the images plugged into the proper slots, and everything seems fine except for the normal map.
If you look at the bottom of the image, when I connect the normal image, the preview goes black. It seems to still render in preview, but I'm not sure the normals are working. So first question is why?
Secondly you can see how the texture is repeating very small on the object. I tried adding a Mapping node between the color texture, but playing around with scale there (no matter if I select texture, point, whatever) didn't do anything. How can I get it to scale properly?
I am using 2.79, rendering with Cycles of course. Yes, the object is UV unwrapped.