quinn's default 1 MiB datagram FIFO holds tens of seconds of Opus; on a
congested link the audio/rumble/input planes built a standing delay that
never drained while video (own latest-wins UDP path) stayed live —
observed on the Deck as audio and rumble lagging together by the same
experience-destroying amount. quinn sheds oldest-first at the cap, so a
4 KiB bound makes the plane latest-wins at the source: ~200 ms of stereo
Opus worst case, and sustained congestion costs concealable drops
instead of lag.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
enricobuehler
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