When I mask metallic surfaces, I get hard specular spots no matter how smooth the shader is transitioning. Is this normal? Even at AA7 PNT 0.025. This was happening on the razor crest model and many others. I wanted to apply dust and I'd figure I could just "overlay" a material and it just lessen the effect of the shine rather then break it up.
Here is an example. Without the dust layer on the metal it's pretty much fine but with dust it breaks up around corners (like the engine)