Recently, my drone is flying poorly. It may fly correctly for a minute or so and then it doesn't seem to have the power to stay in the air. The batteries are fully charged in the drone and new batteries are in the transmitter. If I hold the drone in one hand and manipulate the throttle with the other, the motors seem to vacillate between full power and reduced power even if the stick is pushed and held at full throttle. If I attempt to shut the motors off by holding the left joystick down for at least three seconds their is no response from the drone. I bind it with each flight as well calibrating it on a level surface. All trim is neutral. I have also noticed that when I first take to the air that as the barometric pressure feature calibrates it seems to rise and fall at least six feet or so when it used to be three feet or so. If I use yaw and turn left or right it really shows a drop. Symptoms of a printed circuit board issue?
