Great job! Takes me back quite a few years to when I first started FPV.
What RX/TX protocol are you using? That almost looks more like interference from your RX/TX than from the ESC. ESC interference is more of a tearing across the whole image and gets worse as power is applied. Keep your AIO as far away from the receiver and antenna as possible. You could try a separate battery/BEC as a test to see if it is coming from the power. The fisheye on the AIO makes it tough to judge altitude, speed, and distance. The more you fly, it will be easier to judge.