They are fast only on fast and expensive user equipment: https://infrequently.org/2021/03/the-performance-inequality-gap/ https://infrequently.org/2021/03/the-

They are fast only on fast and expensive user equipment: https://infrequently.org/2021/03/the-performance-inequality-gap/ https://infrequently.org/2021/03/the-performance-inequality-... More context in older post: https://infrequently.org/2017/10/can-you-afford-it-real-world-web-performance-budgets/ https://infrequently.org/2017/10/can-you-afford-it-real-worl... > Partner meetings are illuminating. We get a strong sense for how bad site performance is going to be based on the percentage of engineering leads, PMs, and decision makers carrying high-end phones which they primarily use in urban areas.