Logic 9's UI extremely laggy - any fixes?

In your first example you don't show us the same 3rd party plugins seen in the second one.

Always in this first example you should show us how at least Logic react with two plugins windows open (two 3rd party for instance).

Apple need to fix this ASAP

I suspect Logic's code is in the process of being modified to take advantage of all the Open CL and Open GL optimizations that have recently been implemented at the system level. Offloading some of the intensive graphic operations to the GPU should solve the UI issues some are experiencing, with a qualified graphics card anyway.

Alexander,

Does the lag occur when the 32-bit bridge is not open?

Does the lag occur when only native plugins are loaded? (Meaning no 3rd party plugs are disabled in the channel strips.)

Hypnotik and Alexander -- What graphics card are you using when experiencing the lag?

George, I did a lot of testing and today I'm going back to snow leopard because I lost so many hours on Lion and Mountain Lion.

Lag happens in either 32 bit mode only (logic with no bridge) and 64 bit, with or without bridge.

I am on a clean mac, so tried disabling also all 3rd party from audio unit manager and keep only native, the problem is still there.

Hypno: I understand what you said but it's the same session, without native plugins also with 5-6 windows, lag is a lot less and happens only sometimes.

I do know for sure that upgrading video card doesn't help,

my colleague plays a blizzard game and upgraded his card, he is an amateur logic user so he just removed it from his mac and kept ableton live.

Patience is not everyone's virtue, where do we work in a radio we downgraded to Logic 8 and Tiger.

sure it's not the graphic card, some ppl with retina macblabla got the same issue

even me i've spent 500 bucks in a new graphic card without any improvements

It may or may not be the graphics card at this point, but once (speculatively speaking) Logic's code has been modified to fully exploit the power of the GPU it may indeed become of significant importance.

Because one has upgraded their graphics card doesn't necessarily mean it won't be problematic for certain tasks. Something to keep in mind until Apple perhaps offers a list of recommended graphics cards for use with Logic.

are you kidding ?

ATI Radeon HD 5770

I think it's enough to run Logic....it works flawlessly under SL, really looks like problem is on the software side

Hypnotik,

What you are failing to consider in my statements regarding Logic harnessing the power of the GPU, is that Lion and Mountain Lion have undergone major changes to how the GPU may be tapped into using Open CL and Open GL, which requires modifications in an application's code. I can only presume that this will be implemented in an upcoming Logic version, but it surely is a logical step to offload the graphic intensive tasks to the GPU.

Hi guys

Having the same issue. Mostly with ChanelEQ, it just freezes the UI for a couple of minutes (the tracks keep playing).

System:

Mountain Lion (Upgraded from Lion)

Logic 1.9.7

MacbookPro retina

A bunch of NI, Sonalsys and other plugins.

****'s annoying. Hoping it will get fixed soon.

Hey George

It's much clearer

Please send a bug report jonathan

For those interested, here is the technology that I am referring to that will most likely be harnessed in an upcoming Logic version, of which should help the lagging interface users are reporting:

OpenCL

Harnessing the Power of the GPU for Your Application

OpenCL dramatically accelerates your application by giving you the ability to access the amazing parallel computing power of the GPU. OpenCL also opens up a new range of computationally complex algorithms for use in your application. Possibilities include: Using OpenCL to bring sophisticated financial modeling techniques to accounting applications, performing cutting-edge analysis on large media files, and incorporating accurate physics and AI simulation into entertainment software.

Optimization Is Automatic

OpenCL uses runtime compilation to optimize for the kind of graphics processor in the Mac ‐ automatically adjusting itself to the available processing power. OpenCL also rigorously defines numerical precision and accuracy, providing for consistent results across a wide-variety of GPU hardware.

Just Change the Code You Need

OpenCL stands for Open Computing Language. It uses an approachable C99-based language and a flexible API for managing parallel computation. To accelerate your application, simply use Xcode to rewrite the most performance-intensive parts of your code for OpenCL. The vast majority of your application’s code can be left unchanged.

Hi George, I can ensure you I opened a lot of plugins on a channel strip in ableton live, did it also on pthd system, and got no ui latency,

It's a logic only related problem, sad to say it's there because other developers put a lot of efforts on their pro software, and listen to their userbase, while clearly apple does not.

Open CL to fix a logic only issue while other software's UI are running fine without it?

I think I got it now sorry,

other developers updated their software and apple did not, we need to wait for it.

From what I understand, as I have not experienced the reported issues, the latency is not in the audio engine but resides in graphic redraws, which would indeed be helped by Open CL optimizations within Logic's code. I am of course only speculating, as it is beyond the scope of my understanding as to what may need to be modified, but it seems like an obvious possibility with all the recent refinements offered by Open CL under the hood of OS X.