That's about what I'd expect. If they're doing it sensibly, though, it should only affect the resolution of ambient light effects, not the portion of the rende

That's about what I'd expect. If they're doing it sensibly, though, it should only affect the resolution of ambient light effects, not the portion of the rendering that comes from primary rays. So, the geometry would have sharp edges, but the caustics might be blurry. Seems like a good tradeoff if it drastically reduces the overall computation.