If far from an origin, a facet line will produce in VRayDirt.

[flat]

When there is an object far away from an origin, a facet line produces in VRayDirt.

I understanding when scene bounding is very large, that a problem issues for ray-traced precision.
But avoiding this problem other than moving an object near the origin enables?

confirms by VRay 3.30.xx with any 3dsMax ver.



ex scene
VrayDirtProblem.zip

[tashko.zashev]

It seems that increasing the Secondary rays bias a little bit helps to remove these visible triangle edges. Can you try that ?

[flat]

I did not notice it.
Thank you!