If it’s happening only in one project, it’s likely to be something that you have set up on one of your tracks. Or it’s something related to your delay and reverb feedback. It could be that you have an infinite sustain hold or trigger length set up somewhere.

Load the project, mute all but one of the tracks, and jam with just that one track. Unmute one track at a time, and note when the sound starts. That will at least give you an idea of what is causing the noise.

If it is your delay and reverb settings for that project, it will happen regardless of which tracks you have muted, so try toning down your effect settings first.

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