Problems with creating clipping planes

using Rhino6. since a few weeks i am unable to use any clipping planes.
makeing a clipping plane is possible but enable it and my screen is full of colours. i can’s see the drawing anymore through all the random colours.
anybody any idea what could be the problem?
i am using a one year old macbook pro. driver had been updated few months back. there is nog further update available…

  • Far from origin?
  • Rhino System Info results?
  • your .3dm file that contains the problem?

Hello - can you check Options > View > OpenGL page and change the setting for ‘GPU Tessellation’. Does that make any difference?