I have to mention this, when scrolling through the website, as soon as the Lakehouse illustration to the right renders, it degrades the performance on my MBP, the browser even starts to stutter!
I was viewing in Safari on an M1 Max MBP with no lag. Read this and switched to Chrome and confirmed lag when scrolling. Also lagged returning upward.
It was the only page open in Chrome, freshly launched specifically for this test. Safari has a bajillion open windows and tabs. Something about how Chrome handles the page is definitely odd.
Just for fun, I also tested in Firefox, which was already open with fifteen windows, most of which have a handful of tabs. No lag there.
It didn't lag when I loaded and tested just now to grab the version of Chrome: 122.0.6261.129. Presumably, that's because I'd visited earlier. I don't want to reset Chrome to try to repro again.
I did load up Chromium to check it and got the lag there as well: 124.0.6359.0 (Developer Build)
I don't use Chrome almost ever. Maybe my outdated version is why you can't repro.