192 up now but 3072 down
Still U/S for gaming
More fighting the call centres tomorrow
Who is a good ISP for gaming?
FFS, is that router reported speeds, or speed test speeds? Have you disconnected internal wiring as suggested? Have you let router stabilise for a few days? YOU have to do YOUR part as well 
Those stats are fine for gaming, latency is your issue with games
Very few ISPs use unfettled internet, virtually all traffic shape to some extent, its the only way to make lost cost providers business plans work. Thats different to contention.
Zen Internet is a notable exception, but because of this, they are far from the cheapest.
They are still great, though

Worth the money if you can get a decent speed connection, IMHO.. Unfortunately I couldn't justify spending £90 a month when my line would only cope with (just!) 2Mbit, and the new house is the same (hence Virgin, although they've gone to pot recently, it seems!).
Anyhoo I digress..
Martin - what router are you using? If you tell us the make & model it might be possible to tell you how to get the bin information from it, which would give a good idea where the problem might lie..
I had a similar problem - there was 'something' near my phone line somewhere that was pumping a massive amount of wideband noise onto the line 'low down' which was swamping the SNR of my upstream bins (downstream was fine, just my upstream dropped off to zilch). Never did get down to the bottom of it unfortunately, since BT are uninterested in a fault that doesn't affect voice service (and minimum legal data requirements are 9600baud IIRC?)