i have it, and the framerate it commonly under 30FPS - but to be honest, i didnt care. the little frame breaks ARE small, and they dont kill your experience.
Its a well made game, and you can enjoy it, and it DOES look good, not as much as other games, but its just fitting the game, its pretty.
If you want RPGs on PS3, i absolutely recommend you Dragon Age, you wont be disapponted if you like the setting.