Earlier quoted context omitted.
Jira is in a league of its own. With latest stable Firefox on a Macbook Pro from 2014, I get a full 10 seconds loading time for the notifications sidebar. Every click in Jira takes between 5 and 15 seconds. It is absolutely nuts and it seems like many people just don't understand how insanely bad it is (but obviously many engineers do ;) Meanwhile my browser can load, render, and scroll a 4000 line colored diff in le…
Is your jira heavily customized? I haven't seen this level of slowness and use it daily. I know that customizations can be the root of evil on jira
But my key anecdote is about loading the notifications sidebar after the page has loaded, there shouldn't be any customizations in there. But I dunno, maybe Jira gives managers a bit too much rope with which to hang their development teams.