Video issues with 2009 iMac

I have a 2009 iMac running High Sierra 10.13.6 I seem to be having trouble with video playback after the computer runs for a couple of hours. The only way to obtain smooth video playback is to restart the iMac. Thoughts or solutions?

iMac, macOS 10.13

Posted on Sep 16, 2023 1:03 PM

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Video issues with 2009 iMac

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