Interesting, no there are no scroll effects anywhere on the page. Would you mind sharing what device, browser, and level of internet connection you're using?
Never mind, I tried recording it now but could not reproduce it anymore. It was probably something on my phone at the time (Firefox on Android). I tried to remove or edit my previous comment but it seems it's not an option. Sorry for the noise.
All good! Thanks for looking into it.
Firefox on Android often lags for me with backdrop blur effects
It was also quite slow for me, also with Firefox on Android.