Flat sensivity curve for ailerons is not flat

Hi guys !

I experience an issue where my curve for ailerons is flat :

The sim reads the inputs correctly as you can see here :

But in the cockpit, it looks like that (which is not flat at all) :

Here I mapped the RPM and the roll to the same axis :

And as far as I can remember, i always had this issue, even a year ago with another stick.

Anyone have an ide about how to fix this ?

Thank you !

4 posts were merged into an existing duplicate topic: Movement of on screen yoke does not match real controller