Guest choreo Posted June 11, 2022 Posted June 11, 2022 I posted a similar thread a few months ago when I was still on Catalina (with no answers), but I am still have the same issue the past few months in Big Sur. I originally thought it might be a Catalina bug, but now I am wondering if it is tied to the Mac Pro 7,1? It started this strange behavior around last December I think. Sometimes when I launch say a 30 minute Quicktime tutorial, it auto-runs through the entire video in maybe 5 seconds? It also "sometimes" does the same thing when... Read more Source: MacRumors
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