Just fwiw.
I've been watching my d/l speeds drop slowly over the last week or so down to around 34Mbps half an hour ago so I thought it was time to re-connect. With my Fritz!Box7530 just starting a new session on this occasion took less than 3 seconds and was time well spent.
I was connected to gateway 195.166.130.248 and TBB speedtest was showing 34Mbps. I'm now connected to 195.166.130.251 and showing 44Mbps.
My BQM for just now was also showing considerable (and increasing) packet loss since around 01:00hrs but that has now also stopped.