https://www.cnet.com/news/mozilla-exec-says-google-slowed-youtube-down-on-non-chrome-browsers/

A Mozilla executive says Google's redesign has made YouTube slower on Firefox and Edge.

Chris Peterson, the software community's technical program manager, tweeted on Tuesday that the video sharing site loads at a fifth of the speed on non-Chrome browsers due to its architecture, as first reported by Sofpedia.