UnderWater Limits

How do you extend the water box so the underwater post process works. I get an abrupt change where the ocean box ends. I can still see the waves and water correctly working from the top but underwater simply stops processing. Man this water is driving me crazy since they released it. I bet no one is using it other than for making cool videos. Because it’s just unfinished and very badly documented. Not even proper waves around the coast but only in one direction. I like how it looks but it’s still experimental after so long with little changes. What’s the point?