ZBrushCentral

Strange waves on the normal map

Hello everybody!
I’ve been learning to use Zbrush for a short time, less than 3 months, and now when I try to finish my first piece I come across an error that makes it look horrible!
When I generate the normal map and export it so I can work on the texture in other software, it comes out with “waves” that shouldn’t be there.
Does anyone know what could be going on? :frowning:
I have attached some photos. Even when I try to work with a standard Zbrush project this error happens.Screenshot_19 Screenshot_20 Screenshot_30