If you get used to Jira, especially Ubisofts internally hosted Jira (which was in an oversubscribed 10yo server that was constantly thrashing and hosted half a world away) ... well, it's easy for things to feel "impossibly fast".

In fact in the Better Software Conference this year there were people discussing the fact that if you care about performance people think your software didn't actually do the work: because they're not used to useful things being snappy.