I use 1.1.1.1 so I don’t think it’s easily ignored by changing DNS. But interestingly while using Revanced and NewPipe on my phone I don’t have any of the same problems. Maybe my computer is ignoring my router’s DNS? Maybe mobile YouTube is delivered from a different server? I wish I new but ultimately using a VPN still works for me and is a very low effort fix.

What I don’t get is why it’s only YouTube they choose to throttle. I’ve never noticed any issues on other streaming websites and fast.com which literally uses Netflix servers is also full speed.