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Logic 9's UI extremely laggy - any fixes?

I've been a pretty happy Logic user since 2004, but lately version 9 has been really cheezing me off. It seems that whenever I'm playing my current project, the user interface becomes completely unresponsive to key commands and mouse clicks, which will be delayed for many seconds, or ignored entirely.


This is a fresh install of Logic Pro 9.1.4, 32-bit, on one of the new Mac minis (dual 2.7GHz i7, 4GB RAM, stock 500GB hard drive), with a PreSonus FireStudio Project. However, this was also happening on my previous system, a 2008 15" unibody MacBook Pro. It was happening a little bit on Snow Leopard but it's gotten much worse under Lion. My MacBook had aftermarket RAM (8GB) and an aftermarket SSD, but everything in the Mini is stock.


It's happening even if I only have one or two tracks, although it seems to be worse if I have any of the various metering plugins running and open, or ChanEQ with the analyzer turned on. I wonder if maybe those plugins aren't handling UI updates correctly, or something.


Just to be clear, I have absolutely no third-party AudioUnits installed, and it's neither a CPU nor an I/O issue (both gauges are pretty much empty, and Activity Monitor shows Logic as taking about 10% of one CPU), and yet it takes anywhere from 3-10 seconds for a simple mouse click to go through.


This is getting EXTREMELY frustrating, especially since the lag seems to always happen at the worst moments (i.e. I'm trying to turn down the volume on a track which suddenly got really loud, and the lack of responsiveness means my ears get blasted and I have to take a break for them to recover before I can start mixing again).


Has anyone else been experiencing this and found a workaround? Is anyone at Apple even paying attention to these issues? I feel like it's the same problem that was being discussed in this thread, which was never resolved: https://discussions.apple.com/thread/2396951


Message was edited by: robert113

Mac mini, Mac OS X (10.7), 2.7GHz i7, 4GB RAM, 500GB HDD

Posted on Jul 30, 2011 7:31 PM

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516 replies

Jul 15, 2012 2:22 AM in response to SmokenSound

You're showing me some plugin alliance plugins, are they updated to the latest version ? becasue the latest one correct some plugins lags. But i don't know if it's linked to the Logic GUI problem. If it is, well it means that every 3rd party Dev (not really every but many) needs to rewrite/check their code to match Logic/Apple standards ??

Maybe something has changed...and we're not aware about it....

Jul 15, 2012 6:31 AM in response to Michael Siedenbiedel

If some of you want to test something that i'm currently testing there :


I thought maybe run Logic with High Priority would avoid a bit this issue (??)


You can try this app if you're not into CLI :


http://www.eosgarden.com/en/freeware/process-renicer/download/


It can be done in CLI also by typing :


renice -20 "pid process", the pid is an info you can find into the activity monitor after running Logic, -20 sets high priority.


happy testing.

Jul 18, 2012 10:47 AM in response to SmokenSound

I already spent 500+$ to upgrade my mac pro graphics without any improvements. So i don't hope anything from a new hardware because it seems to be a software related problem!


A bit of communication from Logic support would be the best thing.....really it's fuc*ing annoying to be in hope of something, waiting, without any knowledge of what's going on.

Jul 19, 2012 1:51 AM in response to hypnotik

Could any of the moderators clarify this?


This may be a bit off topic, but there is an announcement, right under the topic title, "branched out to a new discussion" and then when you click the word "discussion" (it's a link) you get a "unauthorized" message? "It appears you are not allowed..."

This link: https://discussions.apple.com/thread/4111136


Does anybody know what's up with that? Why is that link there, if it is not accessible?

Pretty annoying.

Logic 9's UI extremely laggy - any fixes?

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