How to increase descent speed in RTL and POSITION

My DJI F550) Flamewheel is flying very well with most of the defdault parameters. However, when I use the RTL or POSITION flight modes, the speed of descent is VERY slow. Even with the throttle stick backed all the way down to zero, it barely comes down, taking a few minutes to descend from 150 feet.

What parameter needs to be adjusted to change this?

Thanks,
Joe

Safety> Land Mode Settings

Good luck.

No It doesn’t work that way. It only accounts to the landing process when the altitude is lower than the MPC_LAND_ALT1. But for the overall landing process you need to change the MPC_Z_VEL_MAX_DN to desired value. But even when you change this it doesn’t guarantee you that the uav will descend with the max value. It does some calculations and then descends with some value in between. I am also searching for to how to make it descend with the value I inputted.