Hello
With the refactoring of the MRLComm, I have reworked how the servo speed method as the old one got broken.
The new method will give a more realistic speed control, but require some more work to use
To have real speed control, the servo must know at wich speed it can turn. You can tell him is maximum speed by setting with servo.setMaxVelocity(degree/s)
Each servo could have different value, as it's much more faster to turn the head than raise the arm.