@maryd75AKCKN
Thanks for uploading the file. I had a look at it and don't see any issues. I'm not sure it's related to the render engine as I have V-Ray and not Corona. But as a diagnostics, what happens if you set your renderer to Arnold and put on a basic Arnold claylike material or something? Do you still see the short edges appearing?
I'm thinking it's a video driver issue. What video card do you have? Have you completely uninstalled the video drivers and then reinstalled them, a clean install I mean? Also, have you tried installing an older release of your video card driver, say, two releases back?
I have an RTX 4090 and last fall they released a new driver. It caused all kinds of issues for me in Max and in multiple programs with screen draws. I uninstalled it completely and then reinstalled the older driver and all looked fine. Then I waited for two more driver released to occur and installed the new latest one, skipping over two of them. Now the new driver is good and I don't have issues.
Rob Holmes
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3ds Max (2023-2025), V-Ray 6.2, Ryzen 9 3950-X Processor, DDR 4 128MB, Gigabyte Aorus X570 Master motherboard, Sabrent Rocket NVMe 4.0 M.2 drives, NVidia RTX 4090, Space Pilot Pro, Windows 11 Pro x64, Tri-Monitor, Cintiq 13HD, Windows 11 x64
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