Edge Dev: Video playback incredibly choppy on Macbook

 Firstly, I thought this was a place to get help, but my last topic on this was deleted with no explanation? 

 Anyway, the last two updates to Edge Dev have made all video playback basically unwatchable. This is on a Macbook.

 YouTube is the worst offender, but also videos on X etc all play very choppy indeed. Can anyone shed any light on what might be happening? Cheers