I'm going to try that. It's definitely uBO because when I replaced it with Ghostery, the problem was gone. That's the same on all my pre-rpi4 devices and my lap

I'm going to try that. It's definitely uBO because when I replaced it with Ghostery, the problem was gone. That's the same on all my pre-rpi4 devices and my laptop. If that fixes it, I'm surprised they don't just set it up that way by default in Raspbian. But now it'll be hard to tell, because Youtube has changed the way it downloads stuff in the background without prioritizing the stream. uBO definitely blocked a whole lot more noise than Ghostery does.