Hi to everyone and thanks for your replies (i'm a man :D) I don't know nothing about OpenGL or Sreed, but the thing is that this is happened after years that i work with it, with the same PC, i think i touched some options but i don't know what...

About the figure, that is simply Michael 4, but this problem is for the whole scene, for every figure inside the scene, it not depends by which one i use. For example this new screenshot is Michael 3, with a view of my display settings if you are asking about these...

Thank you for your help!