LoRa Causes Unstable Power and Induces Servo Jitter

[CCCanyon]

Thanks!
@jremington : I'll try ditching the AMS1117 3.3v and power the Arduino directly from the 2s li-ion.

@Ballscrewbob : here's the cramped setup

@Paul_KD7HB : no, it's 2s li-ion 7.4v to 8.4v

@Idahowalker : my helicopter is tiny, it won't fit