When the camera is set to be out of focus, there will be obvious mosaics near the focal plane.

Development Rendering
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1

Originally, I was rendering in version 5.3.2, but after testing, I found that the problem still existed in version 5.7. Is there any way to avoid this kind of mosaic?

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image342×767 49 KB

2

Try settingr.DOF.Gather.MaxMipMapCount 0

https://github.com/EpicGames/UnrealEngine/commit/c00d81ea0fd08fee9f8667b92890eef7dadbe292