b*cat, it is most likely RFI that causes it. I'm well used to it now and the fact it drops by about 3.5dB each evening (currently its 5.4dB as I write this), so I'm on TT's 9dB profile as a 6 would make it drop due to the evening SNRM depression.
Having said all that, this TG is by far and away the most stable router on my line on a 24meg profile. Throughput is a little down on it and pings are atrocious to the router itself, but I've learnt to live with that.
VDSL in 9 days and counting...... 8)
Bald_Eagle1, watch this space