Preferences > Frame Rate
Allows you to enable/disable the display of screen updates (in frames/sec). When enabled, the number of screen updates per second (how many times per second the display is redrawn or updated) is displayed in the right end of the status bar. To enable the frame rate (if disabled) or disabled it (if enabled):
In
the Preferences sub-menu click
on Frame Rate.
Choose
Edit Preferences Frame Rate (ALT, E, P, F).
When the Frame Rate Preference is enabled, a check mark is displayed on the Edit Preferences submenu immediately preceding the Frame Rate command.