Can I force Logic to not calculate fades in real time?

I don't think you can disable the real-time fades mechanism.

The closest thing you can do is "Freeze" the Tracks. Make sure to use the Freeze Mode "Source Only" so you can can still have access to the FX Plugins.

I explain all those steps in my manuals "Logic Pro X - How it Works" and "Logic Pro X - The Details", the only books updated for the current Logic version V10.1

Hope that helps

Edgar Rothermich

http://DingDingMusic.com/Manuals/

'I may receive some form of compensation, financial or otherwise, from my recommendation or link.'

Any idea on how to get the same performance from LPX as LP9?

Increasing the I/O sample buffer size in Logic Pro X's Audio prefs.. is about the only way.... and even that may not work..

Simple fact is LPX along with the newer OS X versions, make higher demands on your hardware so performance drops off... compared to say LP9 and Snow Leopard..

This is why several of us stick with 10.6.8 and LP9.1.5 (or 8) rather than use LPX and Yosemite.. for our main working rigs...

Cheers..

Nigel

SubGinge wrote:

Thanks Nigel, I'll be mixing in LP9 then, and making sure not to update my OS any further. I wouldn't want to update to a version that doesn't support LP9. Increasing buffer size was the first thing I tried btw, with absolutely zero effect. What really puzzles me though, is that Logic handles a HUGE load of Vienna/Kontakt instances in the orchestral mockups i use for writing the scores (and those are not several instances with the same instruments mind you) without even a little hickup. But when I ask it to play through an edit point of a measly 64 audio tracks (64 audio regions changing take at once) with just a handfull of EQs and one instance of Altiverb , that cannot be done. Logic is using one sixth of the CPU power available according to the CPU-meter. Does not that indicate that there is unused potential here? Bad coding of some sort?

Ginge

I believe it has to do with Logic's (outdated) buffering scheme that I've griped about for years.

Logic might not have a problem if the audio regions were glued into a single region, here's why I think so:

Logic buffers data by "active" region, you have 64 un-buffered regions lying in wait (so to speak) at the edit point, as Logic approaches the edit it point it tries to buffer the upcoming regions while playing back the original 64 regions... error! It's not a CPU/Processing error, it's a throughput error. Logic 9 is much lighter on it's feet and doesn't have the graphics overhead or memory footprint Logic-X does.

Here's the got'cha in your situation... if Logic had active buffers you probably couldn't make those big orchestra mock-ups, as every plugin would require a little bit of CPU. When Logic is stopped, it basically shuts down the audio engine, no buffers fill or are active so all plugins (Vienna/Kontakt) are not using any processing..

The only other DAW that can operate like this is Cubase/Nuendo and it was only recently added as an option.

Supposedly Apple is working diligently to get Logic and Mac OS fully compatible, which should fix some of these problems. I'm surprised you're doing ok with Logic-9 and Yosemite, many have reported stability problems with that combination.

SubGinge wrote:

I have no particular weirdness in that combo, LP9 is doing fine, but I won't be installing updates to the OS until this throughput-issue is solved. @ Pancenter: have you actually heard they are looking into this?

g

I know two developers and both have told me they've heard that Apple is trying to get Logic-X and the latest Mac OS to be fully compatible.... meaning, it's not fully compatible now I guess. A lot of it has to do with the graphics overhead in Logic-X, from my brief encounter with Logic-X (with a couple of former clients) it feels like it lags, the older the machine the worse it is. One user put the best graphics card he could afford in his MacPro and noticed a definite improvement. Whatever "Logic-X & Mac OS" being fully compatible means is anyone's guess.

I'm a luddite staying with Logic-9 and Snow Leopard, don't want or need any grief.