1. JMC response is slow while switching between JFR Pages (eg:- Threads Page to Java Application Page or Memory Page)
2. Also there's a delay in the response time while resizing the flame graph plot area (repainting the graph) and the delay is proportional to the content/event size.
3. Often required re-selection of event sources (events, threads, methods, etc) from respective JFR pages for repopulation of flame-graph