Z ZipZap macrumors 603 Original poster Dec 14, 2007 6,140 1,495 Jun 11, 2018 #1 I just upgraded to High Sierra (yes I took my time). I now find that after a period of Safari use Youtube videos start playing at hyper speed. The only way to fix is to reboot the iMac. Anyone know what might be causing this?
I just upgraded to High Sierra (yes I took my time). I now find that after a period of Safari use Youtube videos start playing at hyper speed. The only way to fix is to reboot the iMac. Anyone know what might be causing this?