Edge visualization

Hi,
I have a visualization problem on Rhino 4, I have two geometries, when they are close I can see the edge of the one which is hidden from the view (for example in the frontal camera), but when I move it farther (still behind the first one) then I have the correct visualization and I can see the geometry which is in front of the camera only. How can I fix that? (Maybe some sort of view tolerance?)
Thank you for your help

Hi Bruno - see if reducing testZBiasFactor helps at all here- I am not sure that it applies but worth a try.

-Pascal

Hi Pascal, thank you for your reply. I found it was a problem with graphics card settings (OPEN GL), I don’t know much about it but now the view is correct.