“SDK Error on Air 2S waypoint mission”
Update Litchi to v2.14.2
“The relative distance shown on display I had should have been within range”
The RC-N1 has directional antennas, any object between the RC and AC can cause loss of control and/or video feed signal, especially yourself.
“but it stopped moving”
Your screenshot shows a speed of 15mph.
“I finally had to bring up DJI Fly and selected RTH which worked.”
Which proves there was NO loss of control signal.
The RTH button on the RC would have worked too.
“The failure to RTH on loss of signal is a big hairy deal.”
As long as you have telemetry data and the LED’s on the RC are not blinking there’s NO loss of control signal, you only lost video feed signal.
“I was under the impression that”
I assumed that…, I was told that…, I thought that…, etc.
Inform yourself about the facts !
ALL DJI drones that use the DJI Fly app are controlled by Virtual Stick Commands (VSC) during waypoint missions.