You have to make it translucent if you want to do that. Masked will always jump from one to the other.
Best way, of course, it to take the Megascans textures into your own material and do the noise in there… 
You have to make it translucent if you want to do that. Masked will always jump from one to the other.
Best way, of course, it to take the Megascans textures into your own material and do the noise in there…