In X-Plane, if you’re adjusting the Control Sensitivity sliders for pitch, roll, or yaw, but you aren’t noticing any changes when you fly the aircraft, the problem could be that a custom Response Curve is overriding the adjustments made to the sliders.
The response curve and sensitivity sliders dictate how your physical inputs translate to the simulator. However, if a custom Response Curve has been set for a given axis, it takes priority over the Control Sensitivity sliders, essentially rendering any sensitivity adjustments for that axis ineffective.
If you wish to stop using a custom response curve and instead use the sensitivity sliders, you need to:
- Navigate to the Joystick settings in X-Plane.
- Find the control axis that you’re working on and press the “Clear” button

With the response curve cleared, your sensitivity slider adjustments should now take effect as expected.