What is the final software you are sending the model to for rendering? Is it a particular game engine, like Unity or Unreal or CryEngine? It sounds like you want to tile the diffuse, but not tile the normal map. If the engine allows you to create a custom shader, you can set it up to control the diffuse tiling separately…
another easy fix would be to reduce the resolution of the tiling diffuse texture. If you find tiling becomes noticeable then you could duplicate the low res texture to a higher res and add more detail.
ok of course: here is the lp with the normal mal from the sculpt: When i unwrap my lp and fit it to the UV the normal map matches perfect. but i need to scale the UV to get the diffuse map in a higher tiling. when i scale the uv the normal map gets weird.