We had a pretty complex on-prem Jira/Confluence/Bitbucket/Bamboo setup with pretty good performance, at least good enough that it wasn't something we thought or

We had a pretty complex on-prem Jira/Confluence/Bitbucket/Bamboo setup with pretty good performance, at least good enough that it wasn't something we thought or complained about. We also managed and used cloud installation for customers, those pretty much always felt slower. We did have a fairly large number of Atlassian certified people in the company, all of which are probably A-tier when it comes to managing Jira, so that might have helped our on-prem performance. It's not like we had massive database and application servers running the software, but we might very well have thrown more hardware at it than Atlassian does per client.