Edge Ripples

[YoyoBoy]

I have X and Y of my liquid grid set to open, but large swells immediately form on the edges of the box then push inward. Is there any way to avoid this?

[YoyoBoy]

Here is a video of what is happening, and my settings. Is it because there is terrain underneath the water?
https://vimeo.com/1080535741/20cac00658