Your sliders for AO and Cavity are practically turned off, and then you have a point light sitting in front of the object that is basically nulling any remaining effect. Turn the Occlusion Slider up to 1, and the Diffuse Cavity to like 0.8 maybe. Might want to remove the point light for testing purposes and rely only on…
Ok so first off, I think its important to understand the basic fundamental point of PBR, that is that all lights and materials behave in a logical and consistant manner, which means no matter how you set up your lighting, the asset will be lit as correctly as possible. Its really a two part system, part 1 is the shaders…