Water Shader turns into a pixelated mess

[AnyOldName3]

Do any anisotropic texture filtering settings have any effect?

[cpdumpmw]

Nope nothing changed when playing with texture filter and anisotropy

I don't know if water shader is supposed to work this way but when I'm looking to an island, I can see a triangle in the water from the bottom of screen to the island like on this picture https://imgur.com/a/J4vl1PI (the right side of the triangle is hard to see on this picture)