Edges visible in Glass Material

Hey Everybody,

I got some troubel with a simple refractive Material.
I made some Screenshots to discribe my problem a bit better.
The edges are visible in multiple Channels (reflection, refraction, RGB..) when i untick “Reflect on back side” or deactivate my Maps it renders without edges.

We actually work with MAX 2018 and Vray 3.60.04

Thanks in advance
Tommy

Would it be possible to attach or send us the part of the scene with that object os we could investigate further?

I solved the problem a few minutes ago…the secondary rays bias was set to 0,005, after switching back to 0,0 it works like accepted.

If you still want a scene with this Problem i could sent you a link.

It would be good to take a look, thanks!

Best regards,
Vlado

here is the testfile with all informations and Maps

https://drive.google.com/open?id=1VRbB2-EtX8A51rb-2VeLaCQvCo7oBy9p

Thanks in advance
Tommy