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I movie running slow

iMovie is running super slow, I have plenty of storage space and my mac and iMovie are up to date. Why is this happening, can it be fixed? I can't edit or work on it because nothing is playing well and anytime I adjust something it lags the whole project.

MacBook Pro 13″, macOS 11.3

Posted on May 13, 2021 5:14 PM

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Question marked as Top-ranking reply

Posted on May 13, 2021 9:11 PM

Try resetting the System Management Controller (but no longer available for the new M1 computers:


https://support.apple.com/en-us/HT201295



Also, try resetting the NVRAM or PRAM:


https://support.apple.com/en-us/HT204063


-- Rich

1 reply

I movie running slow

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