I've worked in places where there's been an attitude of "yes, this is slower than we'd like, but there are *hundreds* of elements to it, so users will just have to wait a little for it to update."
Friends, in a world where you can hold a multi-gigahertz multi-core computer in your hand that costs less than your team's ☕ budget for the day, "hundreds" is not a large number.
Our colleagues in the game industry know to measure things in _milliseconds_, not seconds.
