@alexia@shrimp.starlightnet.work You can do a "Bandbreitenmessung" (bandwidth measurement) using some official BNetzA tool, which is a bit of a pain because you have to do it multiple times, but then you can do a "Minderung" (tell your ISP "yeah I'm gonna pay you less if you don't provide the service in the contract"). But also, isn't router freedom (as in, they can't tell you what router to use) a thing in Germany since like 2016?