Baking Mesh maps always creates strange lines on the Ambient Occulsion Map

Forum|Forum|5 months ago
September 12, 2025
2 replies
355 views

I have tried disabled GPU Raytracing under Baking Options but still I get these strange lines in the Substance Painter viewports after baking. They seem to be in the Ambient Occlusion map. Also I set "Self Occlusion" to "Only Same Mesh name". How can I fix this?

Baking

Cyril Dellenbach

Community Manager

Hi @David De Sousa,

Thank you for your message.

From the screenshot you shared, I think this is a GPU issue. Can you try to update your Nvidia driver? If this doesn't help, I also advise you to deactivate to GPU Raytracing

Edit > Settings > General > Baking options > Enable GPU Raytracing

and let me know if it helps.

Alternatively, I would also check there isn't some sort of duplicated mesh overlapping the original one.

Best regards,

Cyril Dellenbach (Micro) | QA Support Artist | Adobe

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David De SousaAuthor

Inspiring

Thanks, Cyril for your reply. I do have the latest nVidia driver installed and have GPU raytracing deactivated. There is also no other mesh overlapping or anywhere in the scene.

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David De SousaAuthor

Inspiring

After trying different things, I was able to get a normal bake by making sure that the mesh I exported from 3ds Max to Substance Painter via .fbx was positioned at the origin of the max scene prior to export (vs around 6000 units from origin for the original mesh). I have to say that I have exported hundreds of meshes in various scenes at various locations in the scene and have not had this problem until now.

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David De SousaAuthor

Inspiring

Sorry, I should have included System Specs.

System Specs:

Intel Core Ultra 9 285K

ASUS ProArt Z890 Creator WIFI LGA ATX

NVIDIA GeForce RTX™ 5090

DDR5 RAM 128GB

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David De SousaAuthor

Inspiring

Also noticed the thickness map shows a similar pattern.

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