Not only you and not only this issue: On my Fennec browser on Android it was also impossible to scroll because rendering seemed really slow. So I think they overdid that revamping a bit.
The site brought my S10+ to a screeching halt. I had to force-kill Harmonic, the HN client I use on my phone, just to get out of it. Site preloading via an in-app webview is nice until you happen upon a site like this.
