How increase success rate of spells in Final Fantasy Tactics War of the Lions

The permanent boost from effects like Ramza's skills and the lectures of a Orator is only a fraction of the change you see during battle. Ramza may be able to raise a unit's Bravery by 5, but the permanent boost is only going to be 1. The same goes for the Orator's skills that raise or lower Bravery and Faith (and, to point, the Orator is the only way to boost Faith in this fashion).

As such, if you want significant boosts to your Bravery or Faith stats in either direction, you need to be using the abilities to alter your Bravery and Faith stats repeatedly during battle. In due time, you'll see the impact. Keep in mind, however, that with the permanent stats: a unit who hits 5 Bravery or lower will leave your army out of fright, while a unit who hits 98 Faith or higher will leave your army out of religious enlightenment (this latter one means the actual Faith stat, so being under the "Faith" status effect doesn't cause this). So be wary while you play around with these and make sure not to go so far as to lose your units!

I've bought the game. The answer to my question is that during some spells, there's some slowdown, but most other actions aren't noticeably slow. There are still some occasional bugs. I've been playing for 9 hours now, and there have been 2-3 crashes. The autosave seems to do a good job of salvaging your interrupted game though. I once had a very weird bug where the background music (not sound effects) didn't play, despite the fact that it was turned on in the options. Rebooting the iPhone fixed this.

All told, the bugs aren't enough to seriously dampen the fun. It's as great a game as I remember.