"what your board is?  APM2.52 OR pixhawk? 
what firmware version do you upgraded ?  3.4 or 3.5?
 thanks for replay!"

"Have anyone met the same issue? "

"have you solved this issue?
I want get my first 1000M too ! "

"How many compass sensors do you have?  what the ver of your apm board?"

"Are you sure you do this test with the same vehicle and parameters?
I think this is the most post that revealing thing about that there is a problem with 3.2.1 ,at least with the vibration filter code.
I think the devolper team should think about…"

"In addition ,I also raised up my rate_p and rate_I(roll and pitch ) both to 0.31, the default is 0.15 .Now the overshoot is not very obvious."

"Is there anyone  fly with 3.2.1 ,and everything is good ?
I want to know what kind of  factor  makes them fly well with 3.2.1? good anti-vabration ?
For 3.2.1,I got overshoot in roll or pitch axis if I let go the roll or pitch stick too quick after…"

"I agree with resume development of  ArduCopter 3.2* branch for apm2.5.2 or 2.6 without new feature but just more stabilization . It is really good plateform for drones. It's so pity to drop it."

"What I have'nt tell is that  If I let go my stick of roll very gently , it would not overshot ,even after a high speed flight. I guess the reason for that if my frame is too light. After a hight speed flight the vehicle would climb normally , the…"

"I mean no problem WITH althold,it just roll and pitch got overshoot. the althold is good!
my setup :HEXA frame size 680mm  F4006 KV680   30A blheli   1238   4S5000   2400g   
I have'nt done autotune.  my pid is so large now,  rate_p  =0.25 …"

"try raise up your rate_p  of  roll and pitch"

"So ,what's the different between ATC parameters  and  RC_FEEL_RP??
 "

"Have anyone  made a test?
 "