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Expressions running 30x slower in AE 2018

Explorer ,
Dec 18, 2017 Dec 18, 2017

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Steps to Reproduce Bug:

1. Download after effects project

Adobe-AE-2018-Expression-Bug-Much-Slower-Preview-Render-Than-AE-2017.zip - Google Drive

2. Please test the project in both 2017 (CC 14) and 2018 (CC 15) and clear the cache right before previewing. Look at the info panel an note preview performance.

Results:

I have a previewing performance drop of over 30x going to AE 2018 (CC 15) version compared to AE 2017 (CC 14). This applies to at least two different computers one (W10, 32GB RAM, GeForce GTX 960) the other (W7, 24 BG, GeFroce GTX 1080)

Expected Results:

The comp should run at nearly 25-30 fps on my computers, NOT sub 1 fps.

Background information:

The comp is setup with the expressions made to simulate a slot game, it's very dynamic and I can easily move around and change some simple key frames and their values and they the comp will automatically update the "game".

I need the code for the "game" to reside in the text layer, and that will produce an array (text string) containing position and timeremap data for all other participating "symbol" layers. They, the symbols, in turn parse the text layer array data to extract their individual positions.

At the moment I've moved back to AE 2017 as my livelihood very much depend on this workflow and currently 2018 (CC 15) is completely UNUSABLE, now it literately takes forever to preview anything. I'm very afraid that future versions of After Effects will continue having this poor expressions performance and I don't know any feasible workaround.

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Expressions

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Explorer ,
Jan 11, 2018 Jan 11, 2018

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Shame less Bump!

Is no one else experience slower Expression  performance when parsing layer text data in CC 2018?

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Explorer ,
Jan 19, 2018 Jan 19, 2018

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I'm seeing sub-1fps playback from your project as well on CC2018, and definitely seems to be tied to the expressions.

(2013 Mac Pro, 64GB RAM, Dual AMD700 Firepro, MacOSX High Sierra)

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New Here ,
Aug 08, 2020 Aug 08, 2020

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(2013 Mac Pro, 2.7 GHz 12-Core Intel Xeon E5, 32GB RAM, Dual AMD700 Firepro, MacOSX Catalina)

 

I am getting the same issue! I am in AE 2020 currently and any projects where I heavily utalize expressions puts preview and render times in the toilet. I have been looking everywhere for a soloution ... and it keeps looking like it is after effects itself. This machine has never had any issues handling heavy performance loads until I encountered this issue. Any suggestions or thoughts would be much appriciated .

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New Here ,
May 17, 2021 May 17, 2021

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LATEST

Sadly I don't have an answer, but I am having the same problem so I'm going to follow this thread in hopes of an answer. Over the past coule of years I've really fallen in love with using expressions for text animation, but the slow down I'm experiencing is making it practically impossible. I'm running AE 2020 on a Mac Pro 2010, 2 x 2.93 GHz 6-Core Intel Xeon, with 64GB RAM and a Radeon RX 580 8192 MB gfx card, and I'm runing Mac OS High Sierra 10.13.6. Big thanks to anyone who might be able to help!

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