Very nice demo:

My PC is old by today standards and was able to maintain stable 60fps, when in fullscreen (F11) with motion blur on, depth of field on, relif mapping on, AO at medium, the rest at defaults. I run this on Vivaldi also based on Chrome.

My PC: intel i7 860 2.8Ghz, 8GB RAM, AMD R9 270X 2GB, onbord RT HD sound.