[FuzzyDunlop]

To the knowledgeable it's no surprise at all (although I'm glad to realise my own project's juddery scrolling is probably down to gratuitous border radius and box shadow usage now).

To those who aren't knowledgeable and design websites without really digging into optimising javascript performance and all that, they might never have come across the concept of a 'simple website' in a browser having an impact on performace. To these people it's just a page of text and images, not a game or something typically known to require good hardware.