Hello! I have been in the RC world for over 11 years (14 years old now), recently introduced to Multi Rotors, I own a Eachine Wizard x220 (I recommend it), what is PID? I have programmed my quad with BetaFlight 3.1.1 and it flies great. But I keep hearing stuff on YT, "I had to up the 'D' for less jello in flight' I WANT TO KNOW! My quad has serious jello. How to fix? Can somebody please define what PID tuning is, I might be going on about nothing, I don't know. Thanks for the help! Hope to learn from you all!