ios - Best method for troubleshooting "hiccups" in xCode? -

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I am working on a small iPhone game using SprintKit. From time to time the game will "hiccup" and freeze for half a second before it starts again (CPU usage drop by activity monitor shows up to 0%). I do not really know where things can be cold, and I am unfamiliar with the tools of xCode to solve these issues. I have experimented with the installation of breakpoints and where things are being frozen, but I do not think this is the right way to solve the problem. What is the method of solving short and seemingly random order issues that are not easily re-presented?


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