when you mention your download speeds are we talking about p2p torrents newsnet ?
or say the latest drivers from nvida ?
if we are talking about the former then welcome to the world of traffic management
Almost all of the above. My sister is using BT and it can be shocking. It is an option 3 business line and would die for all types of traffic.
At one stage we had a BT / BE in the same house. Both syncing at 15-16000+ kbits. Actually the BT line was typically higher but was made lower because of the ip profile.
P2P 10kbytes/sec vs 1200kbytes/sec for a torrent (the same torrent)
Iplayer not watchable vs could stream multiple programs concurrently.
youtube - the same
web traffic. 512kbytes/sec vs 1200kbytes/sec
Off peak traffic speed testing eg 4am both were around the same at 1300kbytes/sec
From my IT support days I have dealt with many isp's for more serious faults eg exchange / line not syncing etc.. Minimum fix times I have seen when an engineer is involved.
BT 5-7days (since it crosses a weekend).
BT Based 2days.
LLU typically 1day.
Some rare faults involving line cards BE have fixed faults within 2-3 hours since their support team can and will reset the line card in the exchange remotely.
Figures are approx across over 1000 lines and multiple years.
I by no means blame BT for their issue. I blame ofcom for making it next to impossible for them being able to operate effectively by jerking them around consistently.