FCP 10.6 macOS Monterey SLOW & NOT RESPONDING!

Just updated to macOS Moneterey and FCP 10.6 yesterday. Tried using FCP with it today but the loading screen is super super super super slow!!!!!!


I'm connecting a Sandisk Extreme Pro directly to it.

I'm also using a MBP 16: 2019.


Does anybody else face this problem?

MacBook Pro 16″, macOS 12.0

Posted on Oct 27, 2021 12:29 AM

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Posted on Nov 10, 2021 8:41 AM

Is it the same if you try to open a library on your MBP's internal SSD? From my experience and testing, the problem seems to be use of USB3/TB3 external discs upon which the libraries are hosted.

Using a library on the internal storage seems to be unaffected.


May not be the case for all I expect but that's certainly what I've found for now. Hopefully a bug fix for Monterey will sort it.

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Nov 10, 2021 8:41 AM in response to joelchee

Is it the same if you try to open a library on your MBP's internal SSD? From my experience and testing, the problem seems to be use of USB3/TB3 external discs upon which the libraries are hosted.

Using a library on the internal storage seems to be unaffected.


May not be the case for all I expect but that's certainly what I've found for now. Hopefully a bug fix for Monterey will sort it.

Nov 10, 2021 8:53 AM in response to martinr6

@martinr6 you are close to what I think is the main issue. I moved my 4tb NVMe external ssd from a USB hub (thunderbolt 3) to directly plugged into my M1 Mac mini (I have the M1 MacBook Pro as well) and it worked MUCH better.


There are still some slowdowns with loading libraries, but the issue went down by 75% (in terms of loading times and crashes). I think having libraries on your internal ssd does help, but what I think was the main issue for me was having the footage on a drive that was connected to a usb3/tb3 hub.


So if you're still struggling maybe try these two fixes:

  • Host your FCP libraries on your internal drive
  • If you footage is not on your internal drive, put it on an external drive that is NOT plugged into a usb3/tb3 hub.

Jan 10, 2022 12:52 PM in response to ChrisGroom

More often than not, problems after an upgrade of the OS can be caused by old stuff that does not play nice with the new OS.


You may want to run Etrecheck and post its full report here. Use the "additional text" button and paste the report into the text box.


And if you have Chrome, antivirus or "cleaners" on this mac, they are the worst enemies of a sane mac, and especially of professional applications like FCP.

Nov 8, 2021 12:42 AM in response to joelchee

I just had a call with Apple this morning and David(the guy over the phone) said that it could be some third party plugins that may be causing this. We were sharing screens, we tried turning off Tuxera but still no avail and we still couldn't pin point the exact problem. The only solution to this problem is if you have Time Machine(a backup of your previous OS or your entire Mac) and roll it back to Big Sur. If not, we will have to bear with this slow loading time.


Not sure is it because of third party plugins. I have MInstaller and Addmotion on, i use those plugins frequently, so i can't delete them. 😅

Nov 16, 2021 12:48 PM in response to terencehopwood

I have been editing on non-linear systems for 21 years, and I guess when you have worked with older systems one understands why a system of external HDD is needed. SSD's are fast & looks great when you speed test them.

Real work workflows for me has always been a system of; machine + external RAID = happy editor.


When you export or encode from an internal SSD to that same SSD, where is FCP going to write cache files? I don't think one SSD will give you the bandwidth for both tasks.

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FCP 10.6 macOS Monterey SLOW & NOT RESPONDING!

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