Ignoring the OPs issues, there's clearly an issue with the TBB tester for those on high speed (>200 Mbps) FTTP services in North Scotland (eg Inverness/Aberdeen) whether on BT Wholesale Tails or Vodafone/Cityfibre.
As I said, on three
330 Mbps FTTP lines - all on different ISPs - i'm only seeing speeds of 150 Mbps on TBB yet Ookla gives around 300 Mbps. Real life file download speeds on all three are 40 MB/s which ties in with Ookla results. One of the ISPs (FluidOne) even spent 2 hrs one evening doing NUT TCP tests on my line and yet they also got a constant 40 MB/s. If the TBB tester results are to be believed, then this means my FTTP lines are performing only 50% of their capability 24/7/365 - even taking into account the speed testing methodology differences between Ookla & TBB, I find this extremely hard to believe.
The point I'm trying to make is that results from the TBB tester shouldn't always be treated as gospel, especially since you have loads of different Ookla servers to compare against and perhaps more importantly, real life file download speeds as well. No way on earth would I be getting a constant 40 MB/s file downloads if the line speed was only 150 Mb/s.
BT Business FTTP(oD) 330/50 -- 4+2 ONT -- Netgear RAX200
Edited by baby_frogmella (Mon 06-Jan-20 12:19:44)