I just released 1813 for Kibana 6.2.1 and it is much, much faster. Specifically when loading and refreshing entire workpads, performance is improved by 75-90%. That means workpads that used to take 20 seconds to load, now take 5 or less. And there's more good news coming on that front: I found a lot more meat on the performance bone, this is really just the low hanging fruit, to mix metaphors. Enjoy!