Not sure really, I mostly just log into the AA control panel pages now and again, but I do have DSLstats running and peer at that periodically if AA page shows something weird. For all my lamenting about only having FTTC, it's been pretty stable over the years, have lost some sync due to crosstalk but only had 2 or 3 service affecting faults since 2012. In fact, fast coming up on 10 years of having FTTC - Had Sky Fibre the day it was orderable, it was 40/2 back then, but Sky Fibre Pro was then available in June of 2012, I phoned an order through as soon as it was available.
It eventually settled at 72Mbps down, and nowadays I have around 62.