No, it is not. The gimbal tilt is on an analog stick, so the sensitivity is how far you push the rocker. That said, one can adjust the Gimbal tilt joystick sensitivity using the Exponential slider, found in QGroundControl under Vehicle Setup > ...
Change Video Resolution for low-light conditions Power on Vesper Power on Vision GCS Log in to Vision if necessary Tap the Camera “Settings” icon below the red camera shutter button Locate the “Video Resolution” section in the Video Settings dialog ...