I'm new to Godot, but really liking it. I've made a test scene, but I'm getting some screen-door artifacts in my reflections, as seen at https://cdn.pbrd.co/images/H6ytd2F.png -see the reflection of the bottom cube face in the floor. This speckling is even worse in motion, as you'd expect.
Both the plane and cube are using SpatialMaterial with a bit of metallic and roughness. I have one directional light and a reflection probe around the scene, and that's about it.
Any ideas about how I should fix that?