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Vodafone had same problems on VDSL 80/20. That time they were blaming BT infrastructure. However with specialist software it is easy to see what problems and congestion are on " Cable and Wireless " data centers belonging to Vodafone.
I feel now it is pointless to go with Gigafast . Regardless how much you pay , you will get portion of all users traffic. Roughly 65mbp/s off peak and 25mbp/s peak download.
BT broadband only deals now cheaper than VF and real throughout speed is constant as advertised. In my case 68/20 all 24/7.
I'm writing it to prevent people wasting their time with VF . Try to get something more decent
its telling me that im getting 250mb lol
the prompt im using is iperf3 -c speedtest.wtnet.de
The above command would measure the upload speed.
For download speed, you need to use the -R option also.
iperf3 -c speedtest.wtnet.de -R
-R, --reverse run in reverse mode (server sends, client receives)