slow autocad in 3d display

[Dario1982]

hello to everyone, since yesterday inexplicably I have a problem: when in a drawing step to the 3d display, clicking as usual on "shift" more rotellina, it becomes very slow, even for simple drawings created from scratch with only two geometric shapes. . practically when the roote always with shift+rotellina, it takes a few seconds to stabilize and "stop". Can you tell me why? Could I have inadvertently touched some particular approach? He didn't give me this problem before. Thanks a lot!

 

[GP.]

try to activate/disactivate hardware acceleration.

 

[Legs]

proof anche to wireframe2d pass through wireframe the comunque a qualcosa diverse from wireframe2d.