Artifact in reflections

[H_923874]

Hello,

Has anyone come across that issue I got here in this reflecting material ? The only way to get rid of the black curve is rendering in CPU mode. It appears on reflections of materials that have a bump map.
I have tested it in c4d 2025 Vray7 and c4d 2024 Vray6

[viktor_angelov]

Hi H_923874 Are the artefacts appearing only with this specific material? Where is the material from?

If you create a simple scene with one light, a cube and this material are the artefact there as well? If yes, please share the scene with me so I can take a look.

Additionally, you can test with the latest stable build to see if the issue still persists: https://nightlies.chaos.com/main#/vrayc4d7/stable/7.0