Final update, Zyxel is now plugged in and assuming MDWS is still online (not sure when it closes) you should see my new connection on there at the new house. It's fairly similar to the old connection except the continuous downstream CRC errors fault/issue I had no longer exists. In the evening and perhaps at weekends I'm expecting more CRC errors compared to times when there's less people using their FTTC connections on the same route/cabinet, at least that's the pattern I generally notice on my connection when the Fritz!Box 7490 was being used.
R: 0 and fastpath, DLM didn't appear to do anything since the connection went live.
Line card version is also 0xd086 again, upstream UAS is interestingly low, unlike the other connection had a considerably higher upstream UAS (again 0xd086 and was told by the engineer I was put on a fairly new line card, if I recall correctly it was well into a few months worth of UAS).
Upstream UAS: 14204 seconds (which is approximately 3.94 hours)
I'm also currently above my estimated downstream sync rate of 76.1 Mbps
, maybe if I upgrade the SSFP from MK2 to MK3 I might see a further improvement.