None of the cutscene-ish videos play. Instead, they show a texture that represents the missing content. Doesn't interfere with gameplay.

Occasional framerate drops, but nothing too distracting. Ran reasonably well.

Most of the time when starting a song, the notes never appear and the game is unplayable -- However, if you exit and load back into the song repeatedly, it will eventually work as intended. Also, if you use the button to play the next song without going back to the menu, the notes for all the songs will continue working without issue until you return to the menu.