id summary reporter owner description type status component version resolution keywords cc guest host 16170 Cracks in audio & slowdown after some time (Windows guest) dusek "I am hitting an issue where audio in the VM begins fine, but after some usage of audio apps, it becomes choppy with cracks after a 1-2 minutes of varying use. I have no exact repro, usually using audio apps naturally reproduces the issue within 2-3 minutes (I succeeded e.g. by playing YouTube video in firefox, pausing it, focusing other host app, refocusing the VM and playing the video again - the sound did not become slow immediately, but already exhibited ""cracks"" like when playing a dusty LP). I will attach the VM log. I will also attach 2 audio recordings: - one for the above VM log with audio completely slowed down and choppy (with VBox 5.1.9) - one for the same VM, just after restart using the very same program as in first recording, but before the audio becomes slow and choppy (to have a reference point for what the first recording should have roughly sounded like) (again with VBox 5.1.9) Configuration: * VirtualBox versions: - happens on: 5.1.6, 5.1.8 and 5.1.9 (111785) - does not happen on: 5.0.28 * Host: macOS 10.12.1 (16B2555) * Guest: Win 7 Pro x86 Czech FPP * Host audio: CoreAudio * Guest audio controller: hda (Intel HD Audio) Note: I tried with Linux guest (Ubuntu 16.04 x64). I did not reproduce the problem, so I suppose the issue is connected to Windows guests." defect closed audio VirtualBox 5.1.8 fixed audio Windows Mac OS X