QAV-R Custom. Training drone. TC-R260 Frame (QAV-R Copy), Lumenier electronics. Changed 5.8 noname antenna with TBS TRIUMPH-STUB.
Finally got new 6' props - FCMODEL 6045 3-Blade Propeller! Smooth, fast and very quiet setup!

BetaFlight 3.1.6 PIDs for this setup:
anti_gravity_thresh = 350
anti_gravity_gain = 1.900
p_pitch = 50
i_pitch = 30
d_pitch = 11
p_roll = 35
i_roll = 20
d_roll = 10
p_yaw = 90
i_yaw = 25
d_yaw = 20
roll_srate = 86
pitch_srate = 86
yaw_srate = 80