By full speed do you mean 60fps? I agree with that... however, I do believe it's possible to get emulation of the PS2 to a consistent playable level (50/60FPS). Many of the lower end games that don't stretch the GPU of the PS2 too much are already becoming fairly fast, and fairly accurately emulated. (Though... most of these games are 2D for the most part, 3D tends to always take a hit)