about the handbrake I just installed it today and experimented.
had good results with RF=20 but the file size was very large.
and with regular bitrate 10000 had the same blocky grain results.
if you want to experiment
its a grain adjustment layer on 50% gray layer.
cant seem to get it crispy or any where near it with AME encoding
if you willing and able - see if you can get it crispy on mp4 container.