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Controlling Servo Speed And Fluidity With Joystick Control

I recently posted a question about getting my PS3 to work with ARC. I now have a driver that allows it to be recognized and connect. The issue I am having is with the speed of the servos and the robot jitters. It just isn't a smooth movement.

I am using a dynamixal robot arm (AX12) and an OpenCM controller. Is there a way to control the speed or sensitivity of the joystick movement? I have read most of the joystick threads and other materials, but I don't find any reference to how you can have "finer" control over how the joystick is moving the servos.

If I purchased a different joystick would it behave differently? If so, I would appreciate a recommendation on which joystick works best with ARC.

Appreciate any help. Vicki

Related Hardware Robotis OpenCM 9.04
Related Control Joystick (XInput)
Probably the servo position range on each axis. The joystick only has a finite resolution that’s being mapped to a large degree range. 

lower the range per axis