I haven't had any issues with slow buffering yet, but I have experienced something different: Sometimes the video playback suddenly stops altogether in the middle and throws me out of the video completely. I suspect that an ad is supposed to be played in this particular part of the video. I have to re-start playing the video from the part where it threw me out. Sometimes this happens several times in the same video.
I use the latest Firefox in combination with uBlock Origin (also always up-to-date).
I am a premium member but over the last week or so my YouTube videos suddenly started to take an eternity (5-10 seconds) to start playing when they were near instant before. Does YouTube assume I have an ad blocker? I have no Chrome Extensions and no deliberately installed Ad Blockers on Win 11. Going to play around with it tomorrow to see if I can determine what is going on.
I have pihole and premium. I get a lot of buffer stalls too. Started recently. But they're also updating the Android app every couple weeks, so I assumed they are screwing things all up out of incompetence.
This must be some exec's hard focus right now. What a tool.
Apparently, this time it wasn't on Youtube. Rather some users are still using AB/ABP, and there's a bug in those that affects a lot of content, not just Youtube.