salve a tutti!sono andata anche io su speed guide.net e questo e il risultato:
TCP options string = 0204058c01010402
MTU = 1460
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput. If you are using a router, it could be limiting your MTU regardless of Registry settings.
MSS = 1420
Maximum useful data in each packet = 1420, which equals MSS.

Default TCP Receive Window (RWIN) = 31328
RWIN Scaling (RFC1323) = 0 bits
Unscaled TCP Receive Window = 31328

For optimum performance, consider changing RWIN to a multiple of MSS.
Other values for RWIN that might work well with your current MTU/MSS:
522560 (MSS x 46 * scale factor of 8)
261280 (MSS x 46 * scale factor of 4)
130640 (MSS x 46 * scale factor of 2)
65320 (MSS x 46)
bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 1253.12 kbps (156.64 KBytes/s) @ 200ms
Your TCP Window limits you to: 501.248 kbps (62.656 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 120 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)
devo dire che ho un adsl 640 con tele 2 e ho un modem atlantis I storm.cosa mi consigliate fare?