Hey I just did some tests on water reflections. Having a 100% plane water gives odd reflections when streched just adjusted tiles, and I did a test using a slightly hemispherical mesh for the water and the reflections were much better.
See the difference
1st is is 100% planar
2nd is slightly hemispherical.
See the difference
1st is is 100% planar
2nd is slightly hemispherical.