I have been having something similer happen to me, During peak times I get as low as 6mbps, other times I sit at 65ish.
4 engineer visits later and I am now refusing to have any in my home as all test and conversations lead to BT throttling my speeds during peak times. It all has to do with file sharing and for me its because BT believe that my MMO game I play of file sharing.
I have today sent emails to a regional direct for my area, I would suggest you do the same, I have been having problems for 6 weeks and it doesnt look to be getting any closer to being resolved. I did reveive a repsonce to my email very fast and he is in direct contact with the complaints department.
I wish you look on getting this problem resolved and hope we both can soon become happier BT customers
I don't know if this helps but here's the stats from my router:
1. Product name:
|BT Home Hub|
|2. Serial number:||+076272+NQ41052854|
|3. Firmware version:||Software version 22.214.171.124.126.96.36.199.6 (Type A) Last updated 23/08/14|
|4. Board version:||BT Hub 5A|
|5. VDSL uptime:||0 days, 03:14:50|
|6. Data rate:||9999 / 39993|
|7. Maximum data rate:||10999 / 54044|
|8. Noise margin:||7.5 / 12.2|
|9. Line attenuation:||0.0 / 25.3|
|10. Signal attenuation:||0.0 / 38.6|
Attached are the results of a few speed tests I've done since I got in. Zero packet loss, surely that rules out something like REIN?
Sorry to bang on, but does ANYONE have any thoughts as to what this might be, other than congestion at the exchange?