please help

[Jaspi]

please anyone can tell me what i doing wrong
here is a simple obj file and when i zoom in is ok but if i zoom out there is some artifacts
if the object is small ok if is big there is this problem

[Jaspi]

here is the image with artifacts

[Jaspi]

and here is zoomed in without broblem

[Jaspi]

and here is the preferences options used when importing the file

[roeland]

This is the effect of a ray_epsilon value that is too small for the scale of the scene.

First, make sure the OBJ file is exported as 1 unit = 1 meter. If this is not the case, set the scale setting accordingly.

If your scene is imported at the correct scale and you still see these artifacts, you need to increase the ray_epsilon value.

--
Roeland

[Jaspi]

yes
that resolve the problem
thank yuo very much