JIRA is not famous for its stellar performances, but it feels like it's becoming slower and slower with time...
For certain Use Cases, we even tend to use other tools, not because they fit better (on the contrary...), but only because they are faster.
To put it in a nutshell : are there some good practices to implement, in order to keep our instance in a good shape ?
(move closed ticket to another project, avoid boards with more than x tickets, split our "one project with several teams" organisation into "several projects", ..... ?)