Ok, So I've just moved my Gigabit connection to BigPipe from Vodafone. The main reason is I wanted an affordable static IP.

The issue is my speed has dropped from 950/500 to 220/450. https://www.speedtest.net/my-result/5654742313

I've tried 3 different routers and even a direct PPPoE connection from the laptop, same result.

A couple of interesting things when using speedtest.net

1  The routers CPUs don't really get a workout ...30 to 50%

2 When the laptop is directly connected to the ONT the laptop Network usage goes to 100% in task manager

3 I can easily get Gigabit speeds from the laptop LAN card when doing local transfers

Could I really expect to see such a slowdown by going from DHCP to PPPoE?

Oh and Lastly BigPipe support doesn't seem to see the problem, they infact said:

Hey Matthew, 

Thanks for sending those results through to us! :)

We can see that everything on your line is running as it should be and we are glad that connecting via PPPoE has resolved the issue of your speeds."......... Um No