Vi lascio qualche test fatto per @MicheleBandinu , che ringrazio ancora per il tempo che sta spendendo nella questione.
Sta indagando se in questo caso è un problema di rilegamento del PCN per i troppi utenti raggiunti nel breve tempo (I dati sembrano suggerire questo) oppure se c'è altro
Traccia instradamento verso dns.google [8.8.8.8]
su un massimo di 30 punti di passaggio:
1 <1 ms <1 ms <1 ms fritz.box [192.168.1.1]
2 5 ms 4 ms 5 ms static-213-205-53-236.clienti.tiscali.it [213.205.53.236]
3 77 ms 73 ms 64 ms static-94-32-132-225.clienti.tiscali.it [94.32.132.225]
4 125 ms 131 ms 123 ms static-213-205-56-93.clienti.tiscali.it [213.205.56.93]
5 110 ms 100 ms 111 ms 74.125.49.170
6 104 ms 90 ms 88 ms 74.125.245.225
7 4 ms 5 ms 4 ms 108.170.233.57
8 115 ms 117 ms 111 ms dns.google [8.8.8.8]
Server: Vodafone IT - Milan (id: 4302)
ISP: Tiscali
Idle Latency: 93.05 ms (jitter: 1.53ms, low: 90.35ms, high: 94.87ms)
Download: 429.22 Mbps (data used: 622.8 MB)
242.55 ms (jitter: 78.12ms, low: 110.51ms, high: 692.15ms)
Upload: 35.19 Mbps (data used: 62.1 MB)
172.67 ms (jitter: 61.08ms, low: 86.14ms, high: 597.61ms)
Packet Loss: 0.0%
Result URL: https://www.speedtest.net/result/c/f1229293-7312-4b70-b49a-c4baea89a720
Server: EOLO - Milan (id: 11427)
ISP: Tiscali
Idle Latency: 149.63 ms (jitter: 15.43ms, low: 128.73ms, high: 171.48ms)
Download: 603.98 Mbps (data used: 953.9 MB)
205.41 ms (jitter: 68.53ms, low: 87.13ms, high: 667.25ms)
Upload: 56.80 Mbps (data used: 99.5 MB)
259.46 ms (jitter: 80.08ms, low: 154.09ms, high: 614.98ms)
Packet Loss: 0.0%
Result URL: https://www.speedtest.net/result/c/2ea490c1-c066-4a76-bf88-4404f79d5a2b
Server: Wind Tre - Milano (id: 27363)
ISP: Tiscali
Idle Latency: 140.99 ms (jitter: 9.94ms, low: 119.85ms, high: 150.40ms)
Download: 7.61 Mbps (data used: 10.1 MB)
50.70 ms (jitter: 5.44ms, low: 33.41ms, high: 310.61ms)
Upload: 75.06 Mbps (data used: 129.1 MB)
203.07 ms (jitter: 66.66ms, low: 109.05ms, high: 450.26ms)
Packet Loss: 0.0%
Result URL: https://www.speedtest.net/result/c/d1d809bc-d173-4bec-be83-595db439e90a
Server: 31173 Services AB - Frankfurt (id: 23095)
ISP: Tiscali
Idle Latency: 271.48 ms (jitter: 340.26ms, low: 235.22ms, high: 915.61ms)
Download: 77.53 Mbps (data used: 100.5 MB)
447.70 ms (jitter: 100.69ms, low: 238.94ms, high: 1431.36ms)
Upload: 13.27 Mbps (data used: 20.5 MB)
410.03 ms (jitter: 96.47ms, low: 247.06ms, high: 1124.73ms)
Packet Loss: 0.8%
Result URL: https://www.speedtest.net/result/c/bc49176c-2c1b-4d46-9a5f-8b34d8945e58