i miei?

attenuazione e rumore sono ok,vicinza dalla centrale è ok, ping ok

questo dlsrport e non c'è verso di alzare l'mtu

TCP options string = 0204058c0103030201010402
MTU = 1460
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput.
MSS = 1420
MSS is not fully optimized for broadband (although it might work well for slower connections). Consider increasing your MTU value.

Default Receive Window (RWIN) = 261280
RWIN Scaling (RFC1323) = 2 bits (scale factor of 4)
Unscaled Receive Window = 65320

RWIN is 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)
130640 (MSS x 46 * scale factor of 2)
65320 (MSS x 46)
bandwidth * delay product (Note this is not a speed test):

Your RcvWindow limits you to: 10451.2 kbps (1306.4 KBytes/s) @ 200ms
Your RcvWindow limits you to: 4180.48 kbps (522.56 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 121 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)