You're doing well so far . Found the most important stats and that exchange could be worse.
Did you restart the router before taking them, like MrSaffron asked? That can make a big difference.
From the stats you posted you could very well have had some very bad noise event or events at the time it all went to pot. If you have just restarted the router - completely turned it off and best to wait five minutes before turning it back on, then that noise has caused the system to alter the settings on your line due to instability, and slow you down.
That should sort itself in time, or there are ways of getting it sorted if it doesn't. Or if you didn't restart the router that may help a bit anyway.
Have a read of my Noise margin page for an explanation of what it is, then my page about High SNRM/Margin. Also you might find an improvement on your line is possible by dealing with the ring wire. It's in the menu next to that second page.