copter oscillates sometimes

[laserman]

My second quadcopter with 40cm size, weight 800g, 10 "propeller, CF2822 motors, controller with SimonK firmware hovers and flies quite decent, but after control input or wind or descent it oscillates a bit.
This is not really tragic, but on on-board videos it looks bad.

I tried P-values ​​from 3.8 to 5.2 and hardly detected a difference about that oscillation

What else should I try?

[Andy7]

Sensor vibration? How are you damping vibrations from the frame to the sensor board(s).
I'd look into prop balancing too of it were mine.

[Peter]

Try the low pass filter of the gyro to see of it are vibrations. I have good results with 42Hz.

[Electro 2]

If those "P" values are for gyro (i.e. pitch and roll), even the lower value may be too much for a light 400. Try the stock of 3.3 or maybe 3.0.