[Fizzlemizz]

As for the low FPS, that is usually attributed to addons doing to many updates per second.

The biggest culprit is usually unit frames, HUDs etc. that deliver a lot of information via a lot of bars, texts, icons etc.. I don't know many people (read any) that can process 100 updates per second from every status bar, textbox, buff/debuff icon for every party unit frame (let alone their own).

Try reducing these down around 30 for any addon that allows you to throttle updates.

Constant FPS around 60 will give you smooth play but this is always subject to variation depending on things like hardware down to the number of players and NPCs in your vicinity (high pop cities and 40 person battle grounds can can be a major drag on frame rates)