Unfortunately, the tips in the Wiki don't help much. Like you said, it's still painfully slow. With Mala, my spinner at approximately 1/4 speed provides the same scrolling as the spinner at full speed. In other words, Mala isn't currently matching what the mouse/spinner does. I'm not sure why, but Mala does not increase it's speed to match the mouse. It does to a certain point (I estimate from 0 to 25%) but after that, it does not get any faster.