You can improve the speed of large drawing files by displaying simplified versions
of certain kinds of objects.

Display performance is improved when wide polylines and donuts, solid-filled polygons
(2D solids), hatches, gradient fills, and text are displayed in simplified form. Simplified
display also increases the speed of creating test plots.

When you turn off Fill mode, the listed objects are displayed in outline form. Except
for patterned hatches and gradient fills, solid fill is automatically turned off for
hidden and 3D views.

When you turn on Quick Text mode, only a rectangular frame that identifies the text
area is displayed or plotted.

To update existing objects using these settings, you must use REGEN or REGENALL to
regenerate the display.

Learning AutoCad

u can improve the speed of large drawing files by displaying simplified versions of certain kinds of objects. Display performance is improved when wide  …speed up the display. … reduce the settings on the Hardware Display tab to simplify object display for faster redrawing …