Orthographic Camera stuck in render loop..

[joseph_stone]

We use orthographic cameras a lot, but have noticed a strange issue when we render using the VFB via our orthographic camera the render is constantly restarting despite nothing changing. If you switch the viewport from from the camera to a orothgraph viewport, it suddenly starts to work correctly as you would expect. It only seems to effect the orthographica camera (max camera).

Using 3Dsmax 2025 and Vray 7.1

[hermit.crab]

Mind if you send a scene for this one, too?

[joseph_stone]

I can try.

[joseph_stone]

I have just submitted a ticket with max scene and example video: https://support.chaos.com/hc/en-us/requests/372965 (please note we are using Vray GPU).

[hermit.crab]

Thanks for the provided files. I managed to reproduce the issue and I've logged it (internal tracker id: VGPU-6799) for dev investigation. Not sure if there's a workaround except either using Orthographic projection from the Settings, or Orthographic mode in the Viewport.