Image sequence with no effects not rendering multiple frames simultaneously

[rgames]

I have a bunch of PNG image sequences that I'm trying to preview in AE and it won't render multiple frames simultaneously.  There are no effects applied, only a scale.  Successive frames have no dependence on each other so I don't understand why it can't render several at the same time.

My CPU is i9 14900k with 128 GB RAM.  I have AE set to render multi frames simultaneously but every time I render a preview it chugs through the images one-by-one, using very little CPU and taking forever.

How do I make AE render multiple frames simultaneously (like it did back in the day...)?

[Ishan Y]

Hi there,

Sorry for the issue. In recent After Effects versions, Render Multiple Frames Simultaneously has been replaced with Multi-Frame Rendering. Please check this article (https://adobe.ly/45to8kQ) for more details. Please also let us know which version of After Effects you're currently using. 

Thanks,

Ishan

[rgames]

Thanks for the reply - as I noted above, I believe I have AE set to use multi-frame rendering.  Here is a screenshot of what I'm talking about.  Isn't this what you're describing?  If so, this does not enable multi-frame rendering on three different computers that I've tried, so there must be something I'm missing.

[DanijelC]

I am using the latest version of After Effects on a computer with an AMD Ryzen Threadripper PRO 7975WX 32-Core processor, 256 GB RAM, and an RTX 4090. Despite having the 'Enable Multi-frame Rendering' option enabled, it is using only 1 core to render PNG image sequences. Is this normal? Are there any other settings that would allow me to better utilize all of these cores?