Why does my water reflection look so terrible?

First - I am using UE5 early access. I cannot tag this post for that and I can only post if I tag UE4 but I am actually using UE5

Anyway, for the life of me I cannot figure out how to fix this dumb looking reflection. I spent like nine hours on this and nothing is making any difference.

Why does the reflection on my water look so terrible when I rotate the camera downward and how can I fix it? It looks like this and I hate it.

I want it to look more like this all over. I did this by adding a second skylight.

The thing is, though, when I actually play the game it goes right back to that terrible trapezoid looking reflection. What settings should I alter? If it helps, I am using SkyDome and something called Waterline Sim from the Unreal Marketplace.

This is driving me nuts and I an just looking for somebody to point me in the right direction of which settings I should tweak to fix this. Thanks.