Patch size did not correct it.
Smooth surface did, but then again i loose the details.
Can't add tgd here. Loaded a terrain file thats 2 meg. (LittlePineCanyonCO.ter) Not shure where i found it.
Only thing i did was, loaded the terrain, added wather, and then the shader.
Seen this on another terrains i played with.(attachment)
Tryed out the "wet" shader when i saw this.
Again only restricted by altitude.