[atq2119]

> who cares if a webpage is rendered in 100ms or 2s?

Do you really stand by the statement of this rhetorical question? Because if yes: this attitude is a big reason for why web apps are so unpleasant to work with compared to locally running applications. Depending on the application, even 16ms vs 32ms can make a big difference.

[tremon]

Yes I do, because I don't think the attitude is the reason, the choice of technology is the reason. If you want to control for UI latency, you don't use a generic kitchen-sink layout engine, you write a custom interface. You can't eat your cake and have it too, even though most web developers want to disagree.