Logic Pro: quantize keeps turning back on in midi regions

Hey folks. Quantize is turned off in the Inspector but keeps randomly reverting to On in the piano roll. Sometimes it reverts when I open the project, sometimes mid-project. I've tried turning it off in the piano roll, setting it to 0% strength/swing, changing between classic/smart q. Has been happening for months and haven't found a fix on the interwebs. Any thoughts?

Mac mini, macOS 15.3

Posted on Mar 13, 2025 02:56 PM

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3 replies

Mar 13, 2025 03:15 PM in response to swan_mom

Hi,

Are you saying that Quantize will randomly adjust itself on existing regions and not new regions? Did you know that the letter "Q" quantizes regions? Is it possible that you are hitting it by mistake? I personally have not had issues with Midi regions going in and out of quantize.


Also, be sure your key commands are all clear as it related to quantize functions.


If you can show the behavior that would be awesome.


Hope this helps,

~ThatLogicProGuy


Mar 14, 2025 06:55 AM in response to EddieGrey

Yep, I'll open the roll in an existing region and the quantize settings are suddenly on and at 100%/50%. Don't think it's Q related. No way to show the behavior in action--I either notice it when I open the roll or will hear it's changed during playback.


Just cleared the key commands (thanks for that suggestion) and quantized the regions to 0% strength/swing to see if that helps it not pop back up to 100%.



Mar 14, 2025 09:59 AM in response to swan_mom

When aberrant behavior happens in my studios, I clear the cache and reinstall/uninstall Logic Pro and it works just about every time. Sessions can become corrupt from time to time AND/OR third party plug-ins can mess things up considerably.


My main studio has over 2,000 plug-ins and gives me some small issues from time to time. My laptop (20 plug-ins or so) give me 0 issues.


Hope this helps,

~ThatLogicProGuy

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Logic Pro: quantize keeps turning back on in midi regions

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