@dagar, according to the manual it should be possible to set the PWM_RATE for main outputs up to Oneshoot125.
Regardless which parameter I set for the PWM_RATE (800 or 0) it keep stable on 400Hz after the restart.
Is the PWM_RATE fixed to 400Hz on VTOL?
The Airframe type is StandardVTOL (SYS_AUTOSTART 13013)
Firmware Version: 1.6.5dev (stable)