thumbstick will add up to the settings that were applied via calibration
tool.
Upper deadzone determines how far is the outer diameter of the
thumbstick travel zone. The lower the value the smaller the circle. So the
lower the value, the less movement you will need with your thumb for
your video game character to start moving with maximum speed. For
example, if you are playing a fast paced FPS game and need extremely
fast direction changes, you can lower the upper deadzone very low, even
up to 50. Then even the tiniest movement with your thumb will already
register the direction change. Using this technic together with restrictor
ring is the best, because then also the thumbstick physically doesn’t
need large movements to hit the edges, less travel.
If you are not sure what deadzone settings you should use, just go through
the Calibrate Deadzones wizard, and the software will choose the best
settings for your thumbstick. See 5.1. CALIBRATING THUMBSTICK
Sensitivity setting controls how sensitive thumbstick feels. The lower the
value the more sensitive is the thumbstick. Most of the time good values
are 3-10.