Anyone else seeing a reduction in downstream through put tonight ?

[#1]

As the tile suggests, my throughput was fine nearly maxing  using utorrent at around 18:30 , but speedtests  are showing  55-60mbps  and not the usual 70+mbps  except for the btwholesale speedtester  which gives a normal 74mbps result , I'm currently on PTW-AG03 and the status checker isn't reporting it to have more customers connected  than other gateways so why the slow down ,?
Update: as of 10pm throughput back to normal more or less

[#2]

Hi deathtrap,
We're not aware of anything that might have caused that to be honest.

[#3]

If it starts to be a regular occurrence if i tried the Pro Add on if it would make any difference, I know it shouldn't do, but it did for someone else who is on unlimited fibre?
http://forums.thinkbroadband.com/plusnet/t/4287026-pro-add-on-to-unlimited.html If there was a choice of not having traffic management  i would choose that every time,