Logic Pro 10.7 very slow on loading projects and plugins

After updating to 10.7 loading projects become extremely slow - especially while loading plugins. Each plugin takes a lot of time before starting with new one. It’s much much slower than previous versions.

also when inserting plugins in channel

strips - it takes a lot of time and rainbow ball of death frequently appears before plugin opens and gets displayed in insert slot.

is anybody else experiencing this?

Mac mini, macOS 11.6

Posted on Oct 21, 2021 12:08 PM

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Posted on Jan 20, 2022 4:30 PM

I just got off the phone with Apple Support about this issue (a call I scheduled with their Pro Media folks yesterday). While I was on hold I started to do a little debugging.


I started with a fresh project with a 10-second blank audio recording. Then, I saved it and opened it back up. So far so good, nice and fast. Then, I added RVox, a Waves plugin. I saved and closed the project and tried to re-open it. Bingo. Slow!


So then I started searching the Internet for slow Waves plugins with Logic Pro. I came across something that said I should run "Waves AU Reg Utility" which basically scans your plugins and registers them as Audio Units. I ran that utility and it said it errored out, but when I launched Logic Pro again with that test project it opened up right away!


I then tried opening one of my projects that has been really slow. Zing! It opened up with no delay.


Then the Apple Support person came on the line and I told him that I think I had solved it. Fortunately he was nice enough to explain that ... if you are running on macOS Monterey, plugins will only work properly if they are registered as Audio Units.


He send me a link to a document that explains some things you can do to troubleshoot Logic. Hopefully this also helps someone else here. My projects are all opening nice and fast now. I wish I would have discovered this two months ago.


Here is the link to that document: https://support.apple.com/en-us/HT201199

81 replies

Nov 6, 2021 1:58 AM in response to AdamFriedman

That is an interesting observation. I assume you did work in native M1 mode for Logic and not in Rosetta? It might open some possible workarounds. . Have you tried opening an older project and Saving as a new file and check if that opens up faster than the original? If that does not work importing the tracks of an older file in a new empty project started on the new MBP and comparing the opening time. After saving it. Finally copy pasting the regions from an old file to empty tracks with the same instrument in anew file would be an option but that is of course a rather time consuming exercise.

Nov 11, 2021 4:15 AM in response to MJL-Music

I would save the Logic related work and eventual other files created since you moved to 10.7 and then use Timemachine to restore to a point in time you still had 10.6.3. The tricky aspect is that the Logic files are all over your directories so you have to restore top level or each directory (applications, library, audio music Aps, Logic, et .) separate. Still faster than reinstalling all I think.

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Logic Pro 10.7 very slow on loading projects and plugins

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