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Problem with Frame-Rendering Times

New Here ,
May 26, 2024 May 26, 2024

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Hey guys, as you can see in the title I have a problem with the frame-rendering time: 

 

When I apply a bit more complicated effects (e.g. Pixel Motion Blur) in my project, the time for the frame-rendering gets extremely high (up to 1s per frame), even when I set the workspace bar very low, like 1-2 seconds.

 

I already activated Mercury-GPU-Acceleration (CUDA) and Multi-Frame-Rendering, set the Disk Cache up to several hundred GBs (I know it doesn't have to be that high but just in case), of course updated my graphic drivers and gave After Effects 11 GB of my RAM.

The thing that's weird is, the Task Manager shows only a pretty low utilization when actively rendering complicated effects: around 40% CPU, 70% Memory, 30% GPU and 0% Disk.

 

My specs are the following:

Windows 10 Home

Nvidia Geforce RTX 2070 Super

Intel i7-8700k

16 GB RAM

200 GB SSD on which I installed After Effects 

1.8 TB SSD on which I put the Disk Cache

 

I hope you can help me with this problem, thanks in advance.

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correct answers 1 Pinned Reply

Adobe Employee , May 28, 2024 May 28, 2024

Pixel motion blur results in multiple frames having to be rendered to feed into the output of a single frame. So that's naturally going to slow down the speed that frames are rendered. 11GB of available RAM to AE will also fill up very quickly and then AE will need to spend a good amount of time writing rendered frames to disk to free up memory which will also slow down the renders.

 

I don't see what resolution you are working in nor the bits per channel, both of which may also be slowing down

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New Here ,
May 26, 2024 May 26, 2024

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Thanks for the help!

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Community Expert ,
May 26, 2024 May 26, 2024

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Running After Effects on a system with a faster processor will improve render time.

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Adobe Employee ,
May 28, 2024 May 28, 2024

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Pixel motion blur results in multiple frames having to be rendered to feed into the output of a single frame. So that's naturally going to slow down the speed that frames are rendered. 11GB of available RAM to AE will also fill up very quickly and then AE will need to spend a good amount of time writing rendered frames to disk to free up memory which will also slow down the renders.

 

I don't see what resolution you are working in nor the bits per channel, both of which may also be slowing down your rendering on lower levels of RAM.

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