I have Copter-4.0.3, but this was also observed on Copter-4.0.2, I tried the matek f405std board and got the same,
r9m and r9mm receiver.
settings as in the photo. on the calibration tab of the equipment, the values change depending on rssi and are on average 1800.
no matter how I can understand what the problem is
Play with your offset on the mixer. I have set mine to 41. MP, QCG and yaapu show now
nearly the same value as the transmitter rssi .
My Jumper R8 does not output rssi via sbus to the fc and I must use a free channel to upload.
Thanks, but before everything worked fine