Was any RC filtering every added to Arduplane? I’ve struggled for a long time with throttle pulsing but only in auto modes where the throttle is setting airspeed. The system was reacting to tiny (1us) changes in throttle signal and this led to increasing ossicilations.
I know I can turn off throttle nudge but I like to have speed control depending on the weather conditions.
Also, I’m using a taranis X9D with hall effect gimbals and don’t have any issues with any other flight control systems.