My tight formation turn trick (see: lazy method) - From a defensive gun, chop throttle first and slow down a bit (if you started at a high/cruising speed), when you initiate your turn engage autopilot climb (you can toggle between AP climb and level in gun positions), eventually add throttle gradually to maintain altitude or gain (if I'm slow enough to descend while turning in this state, I notice my drones struggling not to overshoot me).