When Vectoring got enabled all was well for ages, pretty well steady up/down connection syncs
Then late last year my Downstream connection sync started to vary, the amount became greater and greater, to the point it was 30Mbps from what I used to gave
It would vary on time of day

My syncs used to be around 80/21Mbps
Now at certain times of day it can drop to as low as 48/19Mbps
Upstream sync I'm not too worried about when connected it stays synced rock steady.
The worst time of day seems to be around early morning around 7am, then gets better during the day and best around 6pm
Complete opposite I would expect it to be with demand

I live in middle of no where, my VDSL modem (DV130) is but 1m (yes 1 meter) from the pillar by the road in a Solar powered box running off a battery, then radio'd to my house
This has been working a treat for nearly 2 years now.
The modem will be happily online for 1000+hours with no sweat

I've been playing with various Firmware to see if there is something afoot, but all pretty well do the same thing
I went back to a pre-Vectoring Firmware and got a decent steady connection leading me to think G.Vectoring is the issue
I then went to latest FW and disabled g.vectoring via CLI
Now my connection is rock steady, actual speed is stuck on 73/20Mbps, not best I've had but over all better than it swinging about all over the place

It is fairly safe to say Vectoring is wreaking havoc on my line, not sure why its doing it
If there was noise on the line then there would be errors on the G.Vectoring disabled connection

This was my Sync speed from May last year, pretty well what I was on till late last year

Here is what I got with vectoring enabled (15th Feb), I have seen it sync below 50Mbps

Here is what I get disabling G.Vectoring on the modem and is after 24 hours since I rebooted modem for the G.Vectoring disable to take effect

Vectoring off confirmed:

What are your guys thoughts on whats going on, or should I suck it up and quit complaining these first world problems