Get higher FPS without speeding up game?

[Therealrhyno]

I have been playing Twilight Princess lately. I am completely new to Dolphin though I understand most of the settings and all that. I am wondering if it is possible to play it at 60 FPS rather than 30 without speeding up the game itself. I have read threads here and elsewhere about Twilight Princess being a game that runs at 60 FPS, yet when I play with the frame limit on Auto or Audio it caps at 30. I am playing the GameCube version of the game.