I have to use JIRA at work, and it's absolutely awful. Every action takes up to a couple seconds to execute, many tasks have no way to be automated or done in batches, and some seemingly simple actions require jumping through several unintuitive menus to complete.
To me it's clear that the people making this software almost certainly can't be the ones using it, and the people generally choosing and paying for it probably are also not the ones using it heavily day to day. Otherwise there's no way this level of performance would be tolerated.