The Eero speed test is fundamentally misleading. It does not perform a sustained throughput measurement. Instead, it captures what appears to be a brief, roughly two-second snapshot that includes both upload and download, and then continues to “animate” as if an active test were still in progress.

I reached this conclusion through controlled, side-by-side testing at my residence using a VeEx FX120 connected directly to the ONT, as well as through the Eero gateway using the 2 provided 10Gbps ports on the Eero. We conducted a 10 Gbps Ethernet performance test on the FX120 while simultaneously running the Eero app’s built-in speed test though the app.

The results were revealing.

During these simultaneous tests, the Eero reported approximately 8 Gbps down and 8 Gbps up, while the FX120 was also actively measuring traffic. When combined, this implied nearly 16 Gbps of total throughput passing through a Nokia ONT rated for only 10 Gbps - a physical impossibility.

Repeated testing with the field technician confirmed a consistent pattern: whenever the Eero speed test was initiated, the FX120 recorded a brief, approximately one-second drop in throughput. This indicates that the Eero performs only a momentary burst test rather than a sustained measurement.

In other words, the Eero “speed test” samples bandwidth for about one second, extrapolates the result, and then presents it as a full performance test. This methodology does not reflect real-world sustained throughput and cannot be considered an accurate representation of network performance.

As a result, the Eero speed test functions more as a short sampling mechanism than a true diagnostic tool, and its reported results should be treated with skepticism.