Hello, surely you know about this horrible bug that make YouTube videos play 10x times faster. It used to be once in a while. Now it's any time of the day. I'm doing what never needed to be done before: restart the iMac. Googled the problem and used all solutions and tricks I found. Nothing is working. I'm a little fed up. I have an old iMac 27 i5 2021 and Catalina. The problem showed when I upgraded to Catalina. Mojave was free of this bug. Do you have any new hint, trick, magic spell? Also there's no CoreAudio in Activity Monitor that I can stop.