Peeling painted wall Normal map artifacts

kaosmos

Hi,
This is the material I´m creating:
 Still needs a lot of work but right now I have this problem:

 
You can download the SD file to check it out for me. I would appreciate it.
I´m new with Designer and I don´t know how to fix this.  
Thanks!

File: https://drive.google.com/file/d/0BxMzzcpoRhmIREtRUGgwSVktZVE/view?usp=sharing

Jerc

Make sure the nodes you use to build your height map have thie format set to 16 bits.

kaosmos

I´m not using height map here, only normal map. 

rexo12

you've generated your normal map from the normal node haven't you? This takes a Black and White image input, or a height map. If you're using normal blend (or combine, can't remember which) anywhere in the graph try setting it to High Quality too.