Kopkiwi:
So I had testing done on my line over the last 24 hours or so. Speeds are consistent and around 900Mb, seems the problem is maybe my PC. Can anyone recommend a new network card for a Dell NUC?
Lorenceo
From an ISP perspective, 9 times out of 10 UFB speed issues are due to CPE.
Well done 2degrees on continuing to strive to find where the issue was. :)
As for a NIC to be used on a NUC, avoid anything USB based, and keep in mind that a NUC is basically a laptop without a screen. Many laptops have trouble with high speed UFB connections, as the chips in them are low powered compared to those available on full sized desktops. This is from experience dealing with similar situations to the one OP has been in.
If you want to see full test results, look into getting a more powerful desktop computer, IMO. Something with a recent i5 or i7 processor, a (preferably Intel) NIC capable of TCP offloading, connected via PCIE. Also keep in mind that www.speedtest.net is not a static website, and neither are the browsers or flash players it runs on.