"When on, enables 3ds Max to use custom driver code to render smoothly shaded objects. Typically this is much faster than using standard Direct3D code, but has an effect only when the driver has hardware-specific custom code. Default=on." Its one of those nice little features they added to help speed up 3dsmax. For me its…
- try the default lighting (ctrl+L) - chage the texture size of your GFX card,- depending on your hardware - if nothing works go with flat viewport mode (helped me in a very complex project where everything was texturized)