You can actually turn up the quality, the main issue in those images is that the bottom of the chair isn’t rendered which is why it’s not reflected. Most of the time though you wouldn’t have a floor that’s that reflective. In the situations in the video you posted it would work really well, where there’s not surfaces underneath things to be reflected, mostly just reflecting walls and cabinets. Also, good thing about SSR is getting realtime reflections on non-planar shapes.