Chapter 4: Configuring Your Pro Tools System 31
DAE Playback Buffer Size settings higher than 1500 msec (Level 2) allow higher track count,
higher density of edits in a session, or the use of slower hard drives. However, a higher setting
may increase the time lag when starting playback or recording, or cause a longer audible time
lag while editing during playback.
To change the DAE Playback Buffer Size:
1 Choose Setup > Playback Engine.
2 From the DAE Playback Buffer pop-up menu, select a buffer size. Memory requirements for
each setting are shown at the bottom of the Playback Engine dialog.
3 Click OK.
If Pro Tools needs more system memory for the DAE Playback Buffer, it will prompt you to re-
start your computer.
Cache Size
The Cache Size determines the amount of memory DAE allocates to pre-buffer audio for play-
back and looping when using Elastic Audio.
The optimum Cache Size for most sessions is Normal.
A Cache Size setting of Minimum reduces the amount of system memory used for disk oper-
ations and frees up memory for other system tasks. However, performance when using Elastic
Audio features may decrease.
A Cache Size of Large improves performance when using Elastic Audio features, but it also
decreases the amount of memory available for other system tasks, such as RTAS processing.
Using a larger DAE Playback Buffer Size leaves less system memory for other tasks. The default
setting of 1500 msec (Level 2) is recommended unless you are encountering -9073 (“Disk too
slow or fragmented”) errors.
Using a larger Cache Size leaves less system memory for other tasks. The default setting of Nor-
mal is recommended unless you are encountering -9500 (“Cache too small”) errors.
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