SNAP SETTINGS INTERSECTION

I am using the SNAP SETTINGS INTERSECTION activatedWhen I draw a line from a point that I know that is an intersection ofother two lines, in the window don't appear as an intersection, then I haveto write the command INT after the command LINE to draw correctly from theintersection, then I suppose when the SNAP SETTINGS INTERSECTION isactivated, the intelliCAD doesn't accept this command.When I have a big draw and I am using the SNAP SETTINGS INTERSECTIONactivated the computer gets freezer for a long time and some times appear themessage that the intelliCAD doesn't respond.