Static Model Space in Draftsight when mouse moves

Draftsight has "old TV static" in the model space and changes when i move the mouse, have re-installed display driver and draftsight software...

Suppose to be One Circle , also their is   Static like changes as mouse moves...

USING Elitebook i7 With ATI graphics card

ATI HD 7570M

Driver Ver. 8.951.6.3000

HELP.....