That frame pacing
To be fair I played the demo for this and the frame pacing was fine from what I remember. Though there were other bugs that stopped me from even being able to progress.
Its the stupid fucking stream, the whole thing was like that. The stream was 60fps and I'd assume most of the games shown probably ran at 60fps, but someone moron fucked everything up either when they compiled the video or the stream was just fucked in some way.
I think it was the former because a couple of the games were streamed/played live and they didnt have the issues. It must've been knuckle destroying for the devs watching their games being shown. To the person/people responsible for fucking up so many youtube marketing uploads recently* I say:
* Like Nintendo uploading some recent videos 24fps because the live action footage was 24fps, uh yeah I think you can compromise the live action footages motion to show the game at properly
since its an advert for the game. I wouldn't mind if it was 30fps, even though thats a terrible way to see a Nintendo game usually, because at least thats a framerate you play games at, unlike 24fps.