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(MacOS) Rendering slows/pauses when AE is not forefront or screens go to sleep

Community Beginner ,
Mar 14, 2019

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Is anyone else experiencing this? Sometime after my screen saver runs for a bit (it's not immediately tied to the screensaver), my screens go to sleep, or even just switching to a different application, After Effects 2019 slows rendering to a crawl. Just starting this thread in Chrome (5 minutes) created a three minute pause where AE didn't render anything. As soon as I switch back to AE it'll render a few frames, and keep rendering...till a few minutes after I switch back to any other application, where it slows/stops again.

Last night I set a number of sequences to render, all of them 2 seconds long. I set the screen saver to turn on after 1 hour, and display sleep after 3 hours, and made sure no other apps were open. Based on the frames rendered, an hour and a half after I left my computer (so not necessarily directly tied to the screensaver) After Effects dropped to about 3 frames every 4 hours or so. It took between 1 and 19 minutes to render each sequence...except after the monitors locked, it spent 14 hours barely rendering at all. Once I unlocked the displays, it finished that one sequence in a matter of minutes. It's now slowing down or pausing rendering every time I switch to a different program (I currently have four apps open - After Effects 2019, Chrome with 6 tabs, Activity Monitor, and Versions for SVN).

When at the forefront, After Effects is only using 1 or 2 out of the available 12 cores, and about 56GB out of the available 64GB RAM (according to the activity monitor it has about 11GB in compressed memory). CPU usage drops to about 1-2% of a single core when AE is not forefront. I assume this is what's happening when the screens lock as well (since it technically doesn't technically entirely stop rendering...it's just incomprehensibly slow).

Hardware: 2013 Mac Pro — 2.7 GHz 12-Core Intel Xeon E5, 64 GB 1866 MHz DDR3, dual AMD FirePro D700 6144MB, 1TB SSD

Software: MacOS High Sierra, version 10.13.6 (latest update for this version, I can't upgrade to Mojave yet due to other software requirements)

After Effects: CC 2019, 13.0.3 (latest update)

Any ideas? I've never had issues with MacOS throttling background apps before (I just rendered a bunch of 3D assets the other day in a different app without a hiccup), nor have I had issues before with AE killing itself when it's not the centre of attention...which appears to be what's happening now?

Thank you all for the information, that's very valuable.

Here is the update: we have confirmed that for some output modules, the machine would still switch AE to AppNap mode. We have put a fix for it and will be available in the coming release: 16.1.2. In the mean time, you may want to try the Workaround I posted on Apr 18.

Thanks,

Thomas

After Effects Engineering Team

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(MacOS) Rendering slows/pauses when AE is not forefront or screens go to sleep

Community Beginner ,
Mar 14, 2019

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Is anyone else experiencing this? Sometime after my screen saver runs for a bit (it's not immediately tied to the screensaver), my screens go to sleep, or even just switching to a different application, After Effects 2019 slows rendering to a crawl. Just starting this thread in Chrome (5 minutes) created a three minute pause where AE didn't render anything. As soon as I switch back to AE it'll render a few frames, and keep rendering...till a few minutes after I switch back to any other application, where it slows/stops again.

Last night I set a number of sequences to render, all of them 2 seconds long. I set the screen saver to turn on after 1 hour, and display sleep after 3 hours, and made sure no other apps were open. Based on the frames rendered, an hour and a half after I left my computer (so not necessarily directly tied to the screensaver) After Effects dropped to about 3 frames every 4 hours or so. It took between 1 and 19 minutes to render each sequence...except after the monitors locked, it spent 14 hours barely rendering at all. Once I unlocked the displays, it finished that one sequence in a matter of minutes. It's now slowing down or pausing rendering every time I switch to a different program (I currently have four apps open - After Effects 2019, Chrome with 6 tabs, Activity Monitor, and Versions for SVN).

When at the forefront, After Effects is only using 1 or 2 out of the available 12 cores, and about 56GB out of the available 64GB RAM (according to the activity monitor it has about 11GB in compressed memory). CPU usage drops to about 1-2% of a single core when AE is not forefront. I assume this is what's happening when the screens lock as well (since it technically doesn't technically entirely stop rendering...it's just incomprehensibly slow).

Hardware: 2013 Mac Pro — 2.7 GHz 12-Core Intel Xeon E5, 64 GB 1866 MHz DDR3, dual AMD FirePro D700 6144MB, 1TB SSD

Software: MacOS High Sierra, version 10.13.6 (latest update for this version, I can't upgrade to Mojave yet due to other software requirements)

After Effects: CC 2019, 13.0.3 (latest update)

Any ideas? I've never had issues with MacOS throttling background apps before (I just rendered a bunch of 3D assets the other day in a different app without a hiccup), nor have I had issues before with AE killing itself when it's not the centre of attention...which appears to be what's happening now?

Thank you all for the information, that's very valuable.

Here is the update: we have confirmed that for some output modules, the machine would still switch AE to AppNap mode. We have put a fix for it and will be available in the coming release: 16.1.2. In the mean time, you may want to try the Workaround I posted on Apr 18.

Thanks,

Thomas

After Effects Engineering Team

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Mar 14, 2019 2
Community Beginner ,
Mar 14, 2019

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Thankfully I was able to save my project back to AE v15 (CC 2018), and it's rendering in the background just fine (albeit still single-threaded, at least it doesn't pause itself constantly). Question still stands...anyone else having issues with AE v16 (CC 2019) not being able to render?

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Mar 14, 2019 0
Community Beginner ,
Mar 15, 2019

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Same issue here on an iMac 2017 and I have the pmset command set to no sleep in the terminal app and have also tried the caffeinate terminal command it still pauses. Pmset -g will show that After Effects should be keeping it from sleeping, but that does not seem to be the case. 1 minute project was supposed to take about 2 hours to render (ouch it is the same with metal or open cl), but when I left it overnight it had paused when the display turned off (no screensaver).

Screen Shot 2019-03-15 at 9.40.30 AM.png

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Mar 15, 2019 0
Adobe Employee ,
Apr 08, 2019

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Hi guys,

Weird! I don't think this should happen. Let me check this with the After Effects team internally and get back to you.

Thanks,

Rameez

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Apr 08, 2019 0
New Here ,
Apr 12, 2019

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Hi there,

We are having the same/similar issue.

We have an After Effects project that should take 10 minutes to render and it can take up to two hours if OSX turns the screens on to power saving mode.

After Effects:

Version 16.0.1 (Build 48)

Mac Pro:

OSX Sierra - Version 10.12.6

Mac Pro (Late 2013)

This is happening on multiple machines. I'll test the project on CC 2018 to see if it is isolated to a cc 2019 update.

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Apr 12, 2019 0
New Here ,
Apr 14, 2019

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Same issue.

MacOS 10.13.6

AE 16.1.1

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Apr 14, 2019 0
New Here ,
Apr 15, 2019

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Same issue. Exactly as the OP described. Long pauses in frame renders when the app loses focus or the display get put to sleep. I have a brand new machine (bought it about 90 days ago) with all fresh software.

Mid-2018 Macbook Pro

10.14 Mojave

AECC 2019 with the latest update

Using the C4D render engine

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Apr 15, 2019 0