pattagghiu Ipotizzo tu stia usando BBR come algoritmo di controllo della congestione.
Ciò detto, ecco qualche test appositamente eseguito su Windows (CUBIC) con il Nokia in questione (con router con flow control funzionante):
Speedtest by Ookla
Server: BT Ireland - Dublin (id: 38190)
ISP: Dimensione
Idle Latency: 42.78 ms (jitter: 0.28ms, low: 42.48ms, high: 43.19ms)
Download: 2102.83 Mbps (data used: 2.5 GB)
43.01 ms (jitter: 0.64ms, low: 41.66ms, high: 46.47ms)
Upload: 149.28 Mbps (data used: 182.2 MB)
38.45 ms (jitter: 1.76ms, low: 36.44ms, high: 52.63ms)
Packet Loss: 0.0%
Result URL: https://www.speedtest.net/result/c/4c1b7c2f-4b1e-4167-b51b-07ae508dd3d1
Speedtest by Ookla
Server: i3D.net - Stockholm (id: 44597)
ISP: Dimensione
Idle Latency: 45.47 ms (jitter: 0.35ms, low: 45.02ms, high: 45.73ms)
Download: 2215.32 Mbps (data used: 3.5 GB)
47.53 ms (jitter: 0.62ms, low: 46.51ms, high: 52.72ms)
Upload: 131.31 Mbps (data used: 162.4 MB)
45.06 ms (jitter: 4.57ms, low: 44.55ms, high: 330.21ms)
Packet Loss: 0.0%
Result URL: https://www.speedtest.net/result/c/9d3b646f-9fea-4547-9395-52e09fbe8c69
Speedtest by Ookla
Server: Frontier - Chicago, IL (id: 14228)
ISP: Dimensione
Idle Latency: 123.78 ms (jitter: 0.34ms, low: 123.19ms, high: 124.08ms)
Download: 2177.20 Mbps (data used: 3.2 GB)
185.60 ms (jitter: 65.21ms, low: 124.78ms, high: 633.19ms)
Upload: FAILED cy: 177.39 ms
[error] Cannot read:
Quelli oltre una certa distanza non c'è verso di farli finire, tant'è che su Chicago mi ha restituito un bel "FAILED".