It varies widely. We have ~300 users, 30 projects, probably on the order of ~20k tickets. Performance has been up and down, occasionally things slow way down and we have to file a ticket and then they come back with some excuse about re-indexing or relocating the instance. Normally it's pretty acceptable, but it feels like there are a ton of a variables that go into its performance day-to-day and minute-to-minute.