Oscillations on Loiter/RTL/Land

It’s very unstable the whole time.
You’ve got the best battery on Earth though! The copter only draws about 2 amps and the battery voltage goes up over time :laughing:
You might have to do some work with the battery monitor to get all that correct.
Depending on what power-brick or power distribution board you’re using, these might be the most likely values you need:
BATT_VOLT_MULT,18.182
BATT_AMP_PERVLT,36.364
Check this discussion for other settings you might need:

And set or adjust all these too:
BATT_ARM_VOLT,11
BATT_CRT_VOLT,10.5
BATT_LOW_VOLT,10.8
BATT_FS_CRT_ACT,1
BATT_FS_LOW_ACT,2
MOT_BAT_VOLT_MAX,12.6
MOT_BAT_VOLT_MIN,9.9

The biggest problems are the vibrations
Your X and Y vibrations are poor - you’ll need to really examine prop balance.
Your Z vibrations are very bad - you’ll need to look for a number of things:

  • props overflying the base plates (probably not with 10inch props) or very close to the arms - maybe space the motors up higher away from the arms
  • flight controller vibration isolation
  • wires pulling or rubbing on the flight controller
  • wires hanging loose
  • wires pulled too tight
  • anything else loose anywhere

Maybe give us a photo.

Once vibrations are fixed give us the log of another test flight and we’ll be able to see if your PID’s are working OK. Preferably a .bin log file rather than a .log file.