Soften controll response from RC

Hi all,

We have a problem with our PX4 drones. Generaly all our drones are very stable, holds position very well. It flies perfect in mission mode. But with manual RC control they are all way to responsive on elevator input (tilt). We are looking for a very gentle and soft RC control input. Even on very small rc control inputs it feels like you´re giving 50% stick input.
What parameter should we work on to get it fly like a “bus”?

Could this be a tuning of the D value on tilt?

We are using Cube, mini pixhawk4, nano v5.
Latest version of PX4, 1.9.2