Video integrated from Youtube Blurry on Mac (but not all of them, and only the 10-ish first seconds...)

Hi Tom,

That's what I thought at first, but then I realised that the video always stop being blurry at the exact same second every time. So if a video was blurry the first 11sec, it stops being blurry at the 11 sec every time we tried. Not one second more, or less. Would it do this if this was bandwidth related?

I tried to embed the video so it would start after the blurriness 'episode' (so in this example, the video was set to start at 11 sec.) and it's good and crisp. No blurriness at all. I feel that would not be the case if this was bandwidth related. (and obvs the videos are super clear on the same device when watched directly on Youtube).