i am currently following the tuning process instructions and stumpled over an out of range issue for the ATC_RAT_YAW_FLTT parameter. It seems to me, that the min/max range (1Hz/5Hz instead 1Hz/50Hz) is not correct on the software side or do i miss something else?
If you are talking about the range shown in the Full Parameter list of Mission Planner ignore that and use whatever value you want and ignore the warning if you get one. Or update Mission planner to latest beta and it will probably show 5-100Hz as it does on mine.