I've been running Castlevania on it and it feels fine. I don't have much experience with the original hardware. Or do you mean that it affects timing?

edit: I just got a similar comment in a Zelda thread. I understand what you had in mind now.

Sorry for posting in such an old thread but why would the NES Classic version run slow compared to the real hardware one? I'm considering that myself and I'm wondering what I'll be getting myself into ;)

Thanks for the reply and the info!

Hey everyone,

My setup consists of the NES Classic Mini with the controller that came with the setup (more or less a standard NES controller). Is that acceptable for this game?

Cheers, Pawel