Turbo mode not working on OS El Capitan

[spellbound55]

Hi guys,

I've been using snes9x for years and never had a problem with this, but now using it on my mac running X El Capitan, when I hit the turbo key I see the text during game play that "turbo mode is on/off," but the playback isn't sped up at all. Any idea what's up? Do I need to change a setting somewhere? Looked in preferences but didn't see anything.

Thank you!
Lea the eternal play of tales of phantasia