I’ll take 500ms ping for those speeds while temporarily on a plane.

No doubt! I’ve measured literal 5 minute ping times on airplanes. 300,000ms. Where are the buffering the packets!?

My guess is that you're getting retransmissions because of dropped frames, not because there's some huge buffer in the sky.

	▲	BobbyTables2 6 minutes ago \| parent \| next [-]
		There’s one huge buffer in the sky! The huge buffers are at the two endpoints (:->
	▲	JackFr 27 minutes ago \| parent \| prev \| next [-]
		I like "huge buffer in the sky". That's where I imagine all my deleted data goes.
	▲	reactordev 31 minutes ago \| parent \| prev [-]
		Indicated airspeed 280kts, ground speed 470kts, FL410, the packets are trying to catch up…