The stick setting menu came about from requests by F3A Pattern fliers so that they could fine-tune the way the transmitter works and feels.

"Stick Response" sets how fast the system responds to stick input. Higher values slow down the response. You use this to adjust the "feel" of the transmitter to suit you. The default setting is about right for just about everyone.

"Hysteresis" sets how much you have to move the stick before the system starts to respond. It adds a bit of "slop" in the center. The higher the number, the more hysteresis you set. Competition Pattern fliers use hysteresis so that they can hold a stick position without causing changes to the flight control as they make the small, involuntary movements everyone has when they try to hold the stick at a given deflection.