Guitar Hero 3 Speed Booster replaces the in-game backgrounds (the stage) with blackness. This increases FPS and is completely reversible as a backup is made the first time you launch the app.
TOMANDERSEN This allows me to rock out on the go on my macbook. I had a few problems, but once I updated to 1.1 ona a fresh install, it worked. (Version 1.2)
JOHNODD Nice we can now run guitar hero 3 on a mac mini without lag problem why do we need guitar hero III for macintosh when we have frets on fire that works on all macintosh computers (Version 1.2)
PHATBANK The "Reset" command doesn't seem to undo the mods. Would be helpful to have a rundown of exactly which files get modified in case a manual restore needs to be done. (Version 1.1)