Installed today 3.5 rc7 on a new build 900mm quad pixracer
first test flight went pretty well second one switching to loiter total mess
copter maintains altitude and position though motor sound like a race car
ch3 out very strange going from 1700 to 1000 every second or so
You have a lot of vibrations, X axis especially.
The copter has plenty of power, maybe a bit too much, as some of the motors are literally stopping to maintain attitude and altitude.
There is a lot of overshoot on the Desired versus actual in Attitude control.
So I would suggest
reducing vibration
Adding some load and
Doing an autotune
Sorry for the slow reply. Definitely it’s working a little too hard. I think with the little copters the gains can be a lot lower so perhaps reduce the rate roll, pitch and yaw P,I,D values by 30% each would help. I think the ACCEL_Z_P and ACCEL_Z_I could be reduced as well.
From the logs it looks like it’s bucking forward and backwards so the Pitch gains in particular probably need to be reduced.