In my experience, the latency is just too great on 3G or 4G with congestion. It's 500ms to 1000ms for something that ought to be instantaneous like clicking on

In my experience, the latency is just too great on 3G or 4G with congestion. It's 500ms to 1000ms for something that ought to be instantaneous like clicking on a tab that I have already seen. React websites might be a larger initial download, but its only an extra 3 seconds wait to begin with, then near instant reactivity afterwards for everything that doesn't require a network call. Ironically, the browser cache is much faster than 500ms so the tab demo would have been faster if implemented as a full page refresh.