Use a SequentialAnimation and put a PauseAnimation in it first, with a duration depending on the index of the delegate.

@Gustaf-D As far as I know there's no such thing for Qt Creator, but if your app can run on Windows you can use Visual Studio to attach a debugger and use the Diagnostic Tools.

They have function call graphs, CPU and memory profiling, hot path discovery and much much more. You can start/stop data collection on breakpoints like you asked.