The "master system" games you are talking about it probably when he was play testing vbt's FBA ports, which probably allowed the author to fix some bugs.I didn't watch the videos much, as what made NO sense to me was why he was playing Master System games? Who cares! Fire up the games we're actually going to run. It's unfortunate that beta testing was done more based on contribution to Patreon, to some extent. That being said, the hardware is most likely finalized anyway, so once this device finally gets sold, then the masses will find all the bugs, report them, and the Prof will likely fix them without much fuss.
And honestly guys I don't get all the negativity and complaining here.
It's not like anybody here was forced to watch the video, and it's not like the author of the video won't see these comments either, so I don't see the point.
He showcases the Satiator and takes the time to make a video and also he also does live playtesting of some homebrew projects.
Personaly it's the first time I see the Satiator in action so it's quite nice to see it.