By making more options inside the function that can be controlled by the Constant values makes it more easy to explain what each settings do with in turn makes it more easy for a non expert to play with it. The price to pay for this is more calculations. Maybe it is better to make a faster function that needs more knowhow to control and instead save out the function with preset values for those that wont understand it. The red and blue material is really only there as I'm currently working on getting foam placed in the correct places and the red blue material is there to make it easy to se if it lines up correctly. The artifact is a strange thing. When i did some renders myself trying out differntsettings I suddenly got an artifact as yours. Well, then going back to the previous settings should remove it...NOT. Whatever I did the artifact stayed. Surly this must be a bug or something making the function and/or terrain hang or something. Then I did remember that clicking the reset but in the material editor have fixed some strange 'hanging' before and it olso fixed it this time. So as a first solution I suggest you try that. I have made some test with waves that have more correct shapes (not the same in front and back). This can be pretty easy done using sawtooth function (where a filter places medium grey at the tops)but the problem doing it that way is that it generates a continius wave and I have not figured out how to solve this in a way that looks god. The other way would mean to in some way use orientation or some othe useful input parameter but so far I have not managed to figure out how to use it and how it works in a procedural terrain as the real geometry aktually is flat. Unless orientation is calculated after the terrain height has been calculated, but if so then how could I use the orientation to change the height if it allready has to be calculated...? Trying to figure that one out is about the same as trying to answer the question: What came first. The hen or the egg? If it's possible to apply procedural materials to a sphere (makin a planet maybe) then orientation in the terrain procedural would make more sense but as far I know this is not possible (maybe it will be in Vue5 Pro?). Secondary wave controlls is allready in the old material but you have to do it using the fractal settings rather than using the constant value controls. So I dont really think it's moving the value settings from the fractal/etc to an external control but rather the possibility to somewhat control the shape and the combiners needed for this that increases the calculations. So it's really about answering the question. What's most important, renderspeed, possibilities, ease of use? Let me know what you think.