I'm making a Brick Wall texture, from the Rob Tutyel course. The main problem with this wall is the Sandstone border. It's just bulging way too much.
I hope you can see that hard transition with the Sandstone.
Here is the hard line, it's really weird and un-realistic.
I've learned why this problem occurs. I'm using a mask maps to tell Blender where and where not do the Brick Wall displacement. For the part where it isn't supposed to do displacement, it just over does it. I'm not sure if there is some sort of "null" node. But it would sure as hell be useful right now.
Here is Sandstone mask map. I had to take a snippet of it, because the file size is way to large.
I am aware that the plaster is using the Brick Wall displacement. I was trying to solve one of them, because they are both basically the same thing.
Here is my project
Here is a screenshot of nodes related to the mask map.



