iMovie is very sluggish performing in Monterey 12.0.1

Then, too, possibly, your system just needs a little tweaking after the updates. Try these two procedures, that are easy to do and and simply involve rebooting while holding down certain keys:

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

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

Resetting the NVRAM or PRAM

Try resetting the NVRAM or PRAM:

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

-- Rich

Sluggish performance of iMovie with Monterey has been reported several times on this forum. See the link below.

https://discussions.apple.com/thread/253312158

So far i am not aware of any solution. This appears to be an issue that Apple will need to solve in a future update.

-- Rich

Users with the slow loading problem have been finding that the library eventually will load, although it may take a very long time. Try letting it continue to load overnight, or as long as necessary. Thirty minutes might be enough. Then, once you have it loaded you can park the open iMovie on your doc where you can easily access it without requiring the library to load again. This would be a temporary workaround until Apple fixes the problem.

-- Rich

Hi, Balaji.h,

Regrettably I am not aware of any methods that would help your situation, other than mentioned earlier. Several posters have reported sluggishness with Monterey. I think it is an issue that will need to await a future update.

Sometimes Mp3 audio can cause some issues. If your audio is Mp3 you could try changing the format to AAC.

-- Rich

Yeah, I guess we’re back to square one. Hopefully Apple will fix the problem soon.

— Rich

I understand that there is now an update in the app store that for the most part solves the sluggish performance problem.

-- Rich