Exagerated normals with PBR textures

Hi,
I don't know if this is normal but when I zoom in on a PBR texture in TRS2022 I get a texture of little mountains or cones. When I turn/remove the alpha setting in the normals.texture.txt the mountains disappear but the texture is quite flat.
These little mountains look quite horrible so I have resorted to normals without alpha channel.
Is this normal (no pun) or have I got my trainz settings wrong?
MikeBr
http://images.n3vgames.com/trainzportal/mytrainz/73624/screenshots/331158/1000/Default-texture-with-little-mountains.jpg

That's as intended, it gives a 3d effect, what it looks like depends on the choice of settings used when constructing a ground texture, one size doesn't fit all in this case.

Thanks for update. I will continue to look for a grass that looks realistic.
Mike