If you pause the video and go to the three dots on the right hand side, click ok, then click on where it says hd (1080p) change it down to 720p and it works without the stuttering.
i know this is a late reply, hope you’ve managed to sort it
I’m having the exact same issue. Although my issue seems to be with certain YouTuber’s or pages. It’s lacking, the words are slower than audio, and if left on - the TiVo box will crash and I won’t be able to use it for some time. Still can’t get any answers to this, and I have tried all help & support offered, online.
It is an issue we're aware of and I'm sorry you're experiencing it. We have flagged it further to the relevant team. I can see our team are working on a resolution and we hope to resolve this as soon as we possibly can.