I have been having this issue with my FPV drone recently that started out of nowhere, and every time I try to fix it seems to get worse. It makes this weird shrieking noise like its about to explode when the throttle is pushed(although sometimes it doesn't do it at all as shown in the video). While it makes the noise, it oscillates heavily and my FPV video feed gets awfully noisy. It also creates a delay so when I don't apply throttle, it throttles up heavily for split second afterwards. I have tried soft mounting the motors, switching capacitors, making sure all screws are tight, and switching out the propellers but nothing seems to be working. Please comment if you have suggestions!


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