I think this is a model issue, but with Vincent's first Limit Break, Gallian Beast, when he uses his Beast Flare technique I get one of those little error messages on the screen (I can never seem to quite catch exactly what it says). It doesn't effect game play and looks fine visually, but I figured it'd be worth mention as I'm that loser that actually uses Vincent's Limits (once I'm sure he won't be healing the opponent, anyways. XD)
Also, messing around with Aali's driver options, but after playing the shooting minigame at the Gold Saucer I can say for sure that I've got something speeding up the minigames beyond belief (I'm just glad that motorcycle speed-up wasn't my imagination!) I'm gonna mess with some of the fixes mentioned early on in this thread, but I figured it might be worth mentioning just in case.
PS - Awesome on the Steam support! I have no interest in that version myself, but it's great for those that shelled out for it! ^_^