I have this problem whenever I start or open a new project the graphics appear fine but as soon as I import anything it corrupts the graphics, like below.
I didnt even save the project, and this corruption is still a permanent part of this project, every mesh appears like this subsequently. All I did was import an object into the project view, not even into the scene, straight away the graphics just went.
Unity is basically useless to me. I wanted to use it to preview objects for texturing and cannot do so at all. Is this a new feature or something?