Ghosting artifacts when rendering metahuman character motion (Movie Render Queue)

[nicksmmith (nathanvillanova)]

Using the command r.VolumetricFog.HistoryWeight 0 in the Console Variables when rendering solved the issue – almost – completely. The remaining ghosting is practically imperceptible now.

This solution was based on a solution given by @Arkiras in the following forum post:

UE5 Sky Volumetric Lighting Ghosting, Any Solution?

Volumetric fog has a heavy temporal filter in order to make the quality/performance acceptable for realtime. You can adjust the temporal weight using the cvar: r.VolumetricFog.HistoryWeight It defaults to 0.9, lowering it should make the fog more responsive to lighting, but it will be less stable (more noise/flickering). A better solution most of the time is to just try to achieve your scattering effect some other way (most games just use camera facing billboards), there’s a good chance it wil…

Final result video test:

Solved!