Adobe After Effects - Manual (Page 654)

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Display (Windows) or After Effects > Preferences > Display (Mac OS), and select Hardware Accelerate Composition, Layer, And Footage
Panels.
Close unneeded panels. After Effects must use memory and processor resources to update open panels, which may slow the work that you
are doing in another panel.
Create a region of interest. If you are working on a small part of your composition, limit which portion of the composition is rendered to the
screen during previews. See Region of interest (ROI).
Deselect Show Cache Indicators in the Timeline panel menu to prevent After Effects from displaying green and blue bars in the time ruler to
indicate cached frames. See Caches: RAM cache, disk cache, and media cache.
Deselect the Show Rendering Progress In Info Panel And Flowchart preference to prevent the details of each render operation for each
frame from being written to the screen. See
Display preferences .
Hide Current Render Details in the Render Queue panel by clicking the triangle beside Current Render Details in the Render Queue panel.
See
Information shown for current render operations .
Press Caps Lock to prevent After Effects from updating Footage, Layer, or Composition panels. When you make a change that would
otherwise appear in a panel, After Effects adds a red bar with a text reminder at the bottom of the panel. After Effects continues to update
panel controls such as motion paths, anchor points, and mask outlines as you move them. To resume panel updates and display all
changes, press Caps Lock again.
Pressing Caps Lock suspends updates (disables refresh) of previews in viewers during rendering for final output, too, although no red
reminder bar appears.
Lower the display quality of a layer to Draft. See Layer image quality and subpixel positioning .
Select Draft 3D in the Timeline panel menu, which disables all lights and shadows that fall on 3D layers. It also disables the depth-of-field
blur for a camera.
In After Effects CC and CS6, use fast draft mode while laying out and previewing a ray-traced 3D composition by selecting an option other
than "Off" from the Fast Previews button.
Deselect Live Update in the Timeline panel menu to prevent After Effects from updating compositions dynamically. See Preview modes and
Fast Previews preferences.
Display audio waveforms in the Timeline panel only when necessary. See Showing properties and groups in the Timeline panel (keyboard
shortcuts) .
Disable pixel aspect ratio correction by clicking the Toggle Pixel Aspect Ratio Correction button at the bottom of a Composition, Layer, or
Footage panel. The speed and quality of pixel aspect ratio correction and other scaling for previews are controlled by the Viewer Quality
preferences. See Viewer Quality preferences.
Deselect Mirror On Computer Monitor when previewing video on an external video monitor. See Preview on an external video monitor.
Hide layer controls, such as masks, 3D reference axes, and layer handles. See Show or hide layer controls in the Composition panel .
Lower the magnification for a composition. When After Effects displays the Composition, Layer, and Footage panels at magnifications greater
than 100%, screen redraw speed decreases. (See
Zoom an image for preview .)
Set the Resolution/Down Sample Factor value of the composition to Auto in the Composition panel, which prevents the unnecessary
rendering of rows or columns of pixels that aren’t drawn to the screen at low zoom levels. See
Resolution .
Improve performance when using effects
Some effects, such as blurs and distortions, require large amounts of memory and processor resources. By being selective about when and how
you apply these effects, you can greatly improve overall performance.
Apply memory-intensive and processor-intensive effects later. Animate your layers and do other work that requires real-time previews before
you apply memory-intensive or processor-intensive effects (such as glows and blurs), which may make previews slower than real time.
Temporarily turn off effects to increase the speed of previews. See Delete or disable effects and animation presets .
Limit the number of particles generated by particle effects. See Simulation effects .
Rather than apply the same effect with the same settings to multiple layers, apply the effect to an adjustment layer. When an effect is
applied to an adjustment layer, it is processed once, on the composite of all of the layers beneath it. See Create an adjustment layer.
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