Compatibility issues between DLSS and volumetric fog.
The problem resolves itself when either DLSS or volumetric fog is turned off.
Test.zip
/Script/Engine.World’/Game/Dof_Test.Dof_Test’
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Thanks for reaching out. As we do not maintain the DLSS plugin, there isn’t much we can do to assist with it. We recommend you contact Nvidia directly for assistance.
Let me know if you have any further questions.
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Should we still report this to NVIDIA?
Yes, please let Nvidia know about this issue. It is possible volumetric fog is involved, but it’s best to start with the external plugin first as Nvidia should have the best understanding of how DLSS is integrated into the pipeline.
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Hello!
I just wanted to post a reminder that Epic will be on holiday break starting next week (Dec 22, 2025) and ending Jan 5, 2026 and there will be no responses from Epic on public or private tickets, though you may receive replies from the community on public tickets.
We wish you happy holidays!
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Hi, thank you for your explanation. However, I missed an important detail: when DLSS is enabled, if the volumetric fog option under ExponentialHeightFog is unchecked, everything works fine; but when checked, graphical flaws appear. Therefore, it seems we cannot completely confirm that the issue is solely caused by DLSS. Should we still report this to NVIDIA?
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