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Hi. In Picture in Picture, a large number of work queue threads are created and CPU usage increases considerably. This happens when startPictureInPicture() is executed on a class created with AVSampleBufferController(contentSource:.init(...)). It does not matter how many times AVSampleBufferDisplayLayer() isenque()`, it is reproduced when the Picture in Picture screen appears. Checking the work queue thread, it looks like it is run by AVTimer of AVKIt, but I can't figure out how to control this. Does anyone know anything about it? This seems to occur on iOS 16.1 or later. See: https://github.com/uakihir0/UIPiPView/issues/17