@Calinou Yes, I get those points, but since it's a demonstration of what it would look like practically in a game, doing a better looking, offline render makes it feel like I'm bending the truth as to what you'd expect to see in a real project in real time; especially since the renderer uses temporal reprojection.
Edit: But you know what? I could have part of the demonstration rendered offline, but most of it will require user interaction, so it would have to be done in real time.