I would also advise PS3 players to really work on their hotbar. Switching between hotbars is an underrated hurdle for DPS on a PS3, especially if you're a SMN and need to manage your pet hotbar. Try and arrange your rotation in a way that feels natural for your fingers, the symbol and directional buttons can feel very different, especially when you're holding down either L2 or R2. I personally find that I can cast R2 spells faster than L2 spells (i.e. press buttons faster), so I arrange my bar accordingly to keep most of my attacks on the right side and long term cooldowns I don't need to constantly press on the left. Things like this will help improve your casting times more than 400 spell speed.