Also set up a Broadband Quality Monitor (BQM) at thinkbroadband.com - this will give you an insight into what is happening with the signal at the Hub, it will take a few hours to get any kind of trend showing.
Nothing in your stats or network log look abnormal to me.
There's something wrong with the BQM, but I can't say what. I can say that I saw that distinctive rectangular profile of "up and down" peak latencies on my connection for a week from 17-22 January (BQM below), and then it cleared all by itself at 2am on 22 Jan. Possibly this is something to do with maintenance and network upgrades, in which case hopefully yours will clear in a few days time.
Type 192.168.0.1 into your browser URL bar and press enter. When the page appears DO NOT LOG IN but click ‘Check Router Status’. Copy and paste the contents of each tab onto here, a Guru will be along soon to decipher the info.