You can select the quality of the preview image from "High Quality," "Standard Quality," and "Low Quality." You can also perform monitor proofing using the RGB profile in order to display the preview with colors that closely approximate the actual output colors.
Procedure
Click Edit - Preferences.
The Preferences window appears.
Click the General tab.
From the Quality list, select the quality of the preview image.
If you want the monitor image to approximate the actual output colors, select the Enable Monitor Proofing check box.