Considering Facebook engineering has gone into detail about how the new site is much faster and transmits much less JS and CSS, I would be a little surprised if the opposite is true. I tend to not implicitly trust HN comments about things being extremely slow, because for whatever reason there are so many of these complaints I’ve never experienced myself. I still haven’t even had performance problems with Electron apps, and those seem to be widely panned on HN as having abysmal performance. They work fine for me.