Is there a parameter to "deaden" an Analog Speed Reference when it's jumping 1-3 volts

Looking for a parameter or settings to play around with to stop a creeping issue.
Our setup is a SGDV-2R8A01B drive receiving a voltage speed reference via a POT.
The drive is slightly creeping due the input voltage not tied down due to the voltage
bouncing around a little. I am working with the software SigmaWin+ looking at the parameters but
don't have access to the actual drive at this time.

Anyone point me to what menu, parameter I can "fudge" with to try and alleviate the creep?

thanks