Quinn's cumulative loss_pct (lost / sent since connection start) was
biased forever by handshake-era losses. Even ~5 lost-out-of-100 early
packets pinned us at "Degraded" (5% threshold) and Codec2_1200 was just
a few more drops away. The metric only diluted as thousands more clean
packets accumulated — by which time the call was over.
LossWindow tracks prev (sent, lost) and reports delta loss per ~25-
packet window. The cumulative value is the fallback when the window
hasn't accumulated enough samples (< 20 packets).
All 6 sites converted (DRED tuner + QualityReport on both send tasks,
self-observation on both recv tasks).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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