Help! My water shader is flickering.

So, I followed these two tutorials;

And it’s resulted in normals that are minuscule and a constant flickering as seen in this gif; https://i.gyazo.com/090e8e63d7848a735e29cc3f351feba0.mp4

I’d love some help!
Here is a link to download the material and the accompanying expressions.

https://www.sendspace.com/filegroup/ifyBw32jdb7D5r8whPU8Cf5DRFH6YvX%2B