Michael, I removed the text from your other post because it may be related:
im having same problem its been happening for months finally decided today to start scratching again due to me being on coronavirus lockdown today and all of my scratch samples are sounding well dodgy when manipulating them mostly when you pull back or rewind so ive posted on the forum hoping pioneer will answer ..
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Are you on a Mac or PC, and what is the spec (CPU / RAM / OS / etc)?