Adobe After Effects - Manual (Page 653)

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Allocate adequate memory for other applications. See Memory & Multiprocessing preferences.
Use multiple processors to render multiple frames simultaneously by selecting the Render Multiple Frames Simultaneously preference. See
Memory & Multiprocessing preferences.
Enable caching frames to disk for standard previews by selecting the Enable Disk Cache preference. In After Effects, assign as much space
as possible to the Disk Cache folder (on a separate fast drive) for best performance. See Disk cache.
Begin by using only a small number of processor cores (for example, four on a computer system with eight processor cores) for Render
Multiple Frames Simultaneously multiprocessing, and then increase the number of processors used until you find the optimum number for
your computer system and compositions. See Memory & Multiprocessing preferences.
Todd Kopriva provides more information about optimum memory and processor settings on the Adobe website .
Improve performance using Global Performance Cache | CC, CS6
Import projects from After Effects CS5.5 and earlier into After Effects to take advantage of the Global Performance Cache. For details, see
Disk Cache.
Persistent disk cache improves performance by retaining frames stored in the disk cache between sessions, saving rendering time as you
work on a project or other projects that might use the same cached frames.
Use Cache Work Area In Background to fill the disk cache for a composition's work area while continuing to work. This technique is
useful when you do not expect to make changes to a downstream composition, or precomposition. This feature works with multiple
compositions, as well.
Improve performance by simplifying your project
By simplifying and dividing your project, you can prevent After Effects from using memory and other resources to process elements that you are
not currently working with. Also, by controlling when After Effects performs certain processing, you can greatly improve overall performance. For
example, you can avoid repeating an action that needs to happen only once, or you can postpone an action until it is more convenient for you.
Delete unused elements from your project. See Remove items from a project .
Divide complex projects into simpler projects, and then recombine them before you render the finished movie. To recombine projects, import
all of the projects into a single project. See
Import an After Effects project .
Before rendering, put all of your source footage files on a fast, local disk—not the one that you’re rendering and exporting to. A good way to
do this is with the Collect Files command. See
Collect files in one location .
Pre-render nested compositions. Render a completed composition as a movie so that After Effects doesn’t rerender the composition every
time it is displayed. See
Pre-render a nested composition .
Substitute a low-resolution or still-image proxy for a source item when not working directly with that item. See Placeholders and proxies .
Lower the resolution for the composition. See Resolution .
Isolate the layer you’re working on by using the Solo switch. See Solo a layer .
For more information about improving performance by isolating what you’re working on, see this video on the video2brain website .
Improve performance by modifying screen output
You can improve performance in many ways that don’t affect how After Effects treats your project data, only how output is drawn to the screen as
you work. Although it is often useful to see certain items and information as you work, After Effects uses memory and processor resources to
update this information, so be selective in what you choose to display as you work. You will likely need to see different aspects of your project at
different points in your workflow, so you may apply the following suggestions in various combinations at various stages.
Turn off display color management and output simulation when not needed. See Simulate how colors will appear on a different output device .
The speed and quality of color management for previews are controlled by the Viewer Quality preferences. See Viewer Quality preferences.
Enable hardware acceleration of previews, which uses the GPU to assist in drawing previews to the screen. Choose Edit > Preferences >
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