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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

Mar 16, 2013 1:50 AM in response to Mark Lord

Mark Lord wrote:



Overall, still feels like a whole box of sticky plasters - but the extra rubber bands are holding it together so far.


I think it's been that way since version 8. It amounts to the Logic programmers trying to keep up (or figure out) what the OS people are doing. Logic has always been a framework of patches, but it used to be much more solid and well thought out. Some of Logic's internals are very old and the recent OS's both demanding (resource wise) and unforgiving.

Jun 24, 2013 8:28 AM in response to SmokenSound

Yep, no fix. And actually, since the ML updates although the lag is marginally better (it rarely does the minutes long lag it used to, but just as often does lag for around 5 to 10 seconds at a time) I have found a ton of other very odd bugs. For instance, yesterday I was working and during playback the playback line didn't move at all along the timeline. It looked as though nothing was playing, but I clearly heard playback. As well, I have a ton of edit bugs now during play. For example, if I'm playing through a song and click to place an edit during said playback it will place the cut someplace bizarre at a different point on the track. I hit stop, undo, and place the edit again without playback: works again. This is something that repeats over and over when it gets into that place. The solution is to restart Logic. I have been in constant communication with somebody very high up in the chain on the Logic team, but to be honest, at a certain point he just said they are working on it and hasn't offered anything new. He suggested that all these quirks could be part of the same bug. Apparently these bugs are rare and hard to recreate. I've suggested that I could buy a new SSD drive and reinstall Logic Pro. He said, don't do it, it's probably not the drive/installation and doesn't want me wasting my money. He suggests it could be memory, but I have very high quality memory and NONE of my other apps have these problems, just Logic Pro.

Jun 24, 2013 10:30 AM in response to fluffy

Been using it since 10.8.3 came out and yes, as everyone is saying - it's not fixed, but it's way way better - for me it's usable. Although it definitely feels like "mitigation technology" at work rather than an actual solution. I can identify with Fredo's comment about "odd" behaviour and sometimes I'll get some lag which Logic recovers from after about 5 secs or so. Unforuntately my own install of 10.6.8 had become very buggy so I've moved over to ML and 9.1.8 full time and, on the whole, it's ok. Though ML is as annoying as **** in many respects - like the STUPID cloud implementation for things like text edit and b&w icons, blah blah the list goes on. I should add I'm running 64bit now - don't have a lot of 32bit plugs left so AU Bridge only crashes about once a day - which is a big improvement.

Aug 16, 2013 10:37 AM in response to Mike Connelly

It is true LPX is faster and more responsive here too under ML (mid 2010 mac pro 8-core, 10gig ram).


However there is stil GUI lag... for example, when you scroll through the mixer the top time & position meters stop and only carry on running once you have stopped scrolling in the mixer window.


I also picked up highly irritating lag in Melodyne and at one point the the plug would just hang or if you clicked a note it would just keep ringing out even after you have let go of it.


It's better but it's not yet there.... I am sincerely hoping and praying Mavericks makes LPX more like LP9 under SL.

Logic 9's UI extremely laggy - any fixes?

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