My ISP (Telekom) is being belligerent and refuses to improve its peering to peers with high amount of traffic [^1].
This results in practically unusable connection quality: 1–100% packet loss, and jitter up to the ranges of 100+ms.
This affects increasingly more and more websites, common and fringe: Twitter, Youtube, Twitch, and sites behind Cloudflare.
I solved this by renting a Berlin server with good peering, and routing my home network through it.
At the same time, some services I use are located in Japan and geoblocks German IP space.
Recently, I found that I could not reach my Tokyo server anymore. I have to do it through my Berlin server.