In my expierience the speed slider have only effect on transition plays. Most important for movement is the acceleration in normal movement and lateral quickness in defense (look for big men movement). The CPU always got a bonus from 2K, so don´t be fair in this slider.
Acceleration –
80/
40
Speed – 37/30 (good and fair transition, both ways. fast breaks now more realistic)
Lateral Quickness - 65/35 (bigs need to be bigs. fast players had a benefit)
Copy paste it from my Sliderset thread. Test it my way and feel free to respond