We don’t need assistance figuring out the problem in the other thread. We know what the issue is.
However, this is good information to have. Qobuz uses Akamai as a CDN, and Akamai uses IPV6. TIDAL’s CDN does not. My guess is that IPV6 will get sorted out as more and more of the internet starts to use it. In the meanwhile, I would disable it.
Another personal anecdote, my kids’ play on a Minecraft server I set up. Latency goes way up with IPV6, to the point where they notice in gameplay with their friends. Turning off IPv6 fixed it.