Seattle, WA Broadband Telemetry Hub
Comcast Xfinity Real Speeds & Peak-Hour Throttling in Seattle
Crowdsourced diagnostic telemetry, bufferbloat grade, and peak-hour bandwidth audit (8 PM – 11 PM).
Customer Rating
3.4
Based on 1,420 tests
Advertised Speed
800 Mbps
Real Avg Download
412.5 Mbps
Upload: 23.4 Mbps
Peak Throttling
22.5% drop
8 PM - 11 PM Night Peak
Bufferbloat Grade
C
Avg Ping: 24 ms
Recommended Fiber Alternative in Seattle
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Telemetry Positives
- •Widespread availability
- •High peak burst downloads
Measured Downsides
- •Asymmetric low upload speeds
- •Severe 8PM - 11PM congestion throttling
- •Strict data caps in select states
Crowdsourced User Ratings for Comcast Xfinity in Seattle
Dave M.
Speeds are fine during the day, but drops significantly around 9 PM.
Sarah K.
Switched to Fiber and latency dropped from 35ms to 9ms!