It would help a ton because recently my 3DS broke and I'm stuck with an emulator to speedrun with. IDK if this is even possible because I'm a newbie here, but it would be a big help, thanks!

- NintendoGP

Keep in mind that you need a moderately powerful computer to run the Citra emulator.

3D Land hasn't lagged at all for me. Nor have any of the Mario and Luigi games. Nor have the Zelda games, so I think I'm good.
(On my YouTube channel, I'm doing a playthrough of Superstar Saga DX, and there was only 1 lag spike on Ep1.)