Mixing : Automation : Drawing Automation : Resolution of MIDI Controller Data

Resolution of MIDI Controller Data
When using the Pencil tool to draw MIDI automation, the data is drawn as a series of discrete steps. You can control the resolution (or density) of these steps to help manage the amount of MIDI data sent for a given MIDI controller move.
To set the resolution for the Pencil tool:
1 Choose Setup > Preferences and click MIDI.
2 Enter a value for Pencil Tool Resolution When Drawing Controller Data. The value can range from 1 to 100 milliseconds.
3 Click OK to close the Preferences window.
The illustrations below show the same MIDI controller automation drawn with different Pencil tool resolution settings.
 
 
For better performance, consider selecting a smaller value for MIDI controls that need higher resolution (such as MIDI volume), and a larger value for controls that may not require a high resolution (such as Pan).