That's weird. It works perfectly for men much older computers and also on my M2 Mac Pro. What version of OSX are you using? I created that product, btw.
Not OP, but on Firefox 132, Sonoma 14.4, M1 Pro, it's quite janky. It's less so on Chrome and Safari, but it's still noticeable.
On a 3,2 GHz 6-Core i7 Mac Mini with Safari it also feels very laggy and unpleasant to use.