Now your pictures have been moderated, we have a "base line".
The figures before and after the test socket are very similar, which say there is no problem at your end. (good)
Your upload with a sync of 17Mbs and SNR of 6 says you are at the maximum for your line. (also good)
Your download sync of 55Mbs is good, but the SNR of 9.7 says much more is available, I can only assume DLM has lowered your sync speed because of the many disconnections. (whether that is you restarting the router or a line problem, I can't tell)
On a sync of 55, you should expect at least high 40's on a wired download test, which is not far off what you say you are getting, so the question is why has DLM increased your SNR/lowered your speed?
Personally I would ask Vodafone if they could do a DLM reset, but they always seem to be loathe to do that.
The alternative is to just leave the router alone, try not to reboot or disconnected it, and hope DLM will kick in and improve the line stats.
If you look at my earlier stats, the line had been up for 70 days, with no cuts, so DLM had reduced my SNR to 4.1. That enabled me to get the maximum for my line of 80Mbs. You're not far off that, but we need to find out why you are getting so many "cuts". (cuts are line disconnects, but the router itself stayed powered up)
If you can. get Vodafone to instigate a DLM reset (I believe they have to ask Openreach to do it), otherwise just leave it alone for a while, and check if the "cuts" are still occurring.
