Round two on flying the quad successfully failed. On the first flight with just easy flying, the quad starts wobbling all over the place until I force it down quickly. Now on run two after a complete flash of the firmware and re setup. During an auto tune it did the same thing. But not actually during the tune as it was paused when I was re-positioning the quad. My guess is the stock pids are two high for the low kv of the motors. I'm not too knowledgeable on adjusting the pids with the Pixhawk but will certainly take some suggestions on where to set them to help it fly better and survive an auto tune. I'm fairly certain it's the stock pids because it is a little unstable just flying it around. I'ts like it can't respond fast enough with the low KV motors and large props. I linked a video of the last couple of minutes before the crash during the auto tune.
Tarot 650 Ironman
Pixhawk with 3DR GPS
T-Motor 3508-29 380KV
15" 5.5 props
Crash vid - https://youtu.be/vA_LnW36m6A