Pitch shaking. How to fix

ArduPlane Plane 4.0
1

Hi!
Some time ago I faced a problem with strong pitch shaking.
After discussing on distort channel the solution was found:

If you have no speed sensor, please disable Stall Prevention
In some cases this option can lead to strong shake as on videos:


Regards

2

Hi,
Do you have a log file available of the flights? I am still curious.

3

Unfortunately log dies with faulty sd card…