It does look a little grainy though. There are more settings you can tweak to take care of that as far as I know.
Lux uses progressive rendering and while there are noise filters, it doesn’t work at this early stage of the render too well without turning the image into a blurry mess. On the upside, I can pause the render and let it progress a bit further later on, and the longer I leave it the sharper the final image. As I said earlier, this one is very much a WIP, and has a good few hours left to go before it’ll be crisp enough to grace my DA account.