That looks really good. I always missed the planar reflections from the old games. They stopped doing it, because it ate so much performance, but SSR never looked anywhere near as good. Godot 4.0 has SDFGI reflections, which can be combined with SSR, but sadly there is a delay. It doesn't update every frame so ends up looking kind of choppy. It's okay for some effects, but not for mirror surfaces.