which service / server You using to measure speed you mentioning @Cookmf ?
If OOKLA (a.k.a. SpeedTest), your results will be really dependant on choice of serve, and routing into it... Not always closest server, or automatically pre-set server will give you best results, and best view of your speed.
For example, my closest server is less then 4 miles away from me, and seems to be first choice... But it's showing me less impressive results, about what you mentioning... Results showing me 400 Mbps max down, and 6 ms ping.
When I change testing server to "Community Fibre" at London, which seems to be unwise, whilst I am good 280 miles away, I am getting much better results, in intention of 700-920 Mbps down, and ping about 11 ms.
Both options giving me 117-119 Mbps up...
That said, my broadband is capable use almost full line speed, if enough good route is between myself and server accessed... That's pretty normal...
Unfortunately, BT Broadband, even FTTP is service, which have not guaranteed speed whatsoever, while only guarantee is speed of line between your ONT/BT SH2 and your exchange. Nothing else... It's quite misleading practice from BT, be fair...
Plus, it's service, which will fluctuate over time of the day, depends of demand on line between yourself, and exchange, whilst every line, even FTTP will have their limit, and especially in city areas, where it's big possibility as there is close to maximum clients on the line, demand might overtake capacity at some points...
About engineers, they tend, same as BT itself, checking speed on fast.com 🙂
That's pretty unreliable result for anything over 500 Mbps downlink.
This also valid (unreliable results) for any speed test over MyBT, or Wholesale BT SpeedTest...
