Hello, I am experiencing a severe and persistent ghosting/smearing issue with Lumen Global Illumination when objects move in the scene. The lighting leaves a very noticeable dark or bright trail behind the moving mesh, as if the temporal accumulation is taking way too long to settle or update the historical data.
I suspect this might be a version-specific bug, as none of the commonly suggested workarounds for Lumen temporal artifacts are resolving the issue without completely breaking the lighting quality.
Steps to Reproduce:
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Create a blank project with Lumen enabled (Global Illumination and Reflections).
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Place a moving object (e.g., a skeletal mesh, geometry cache, or an animated static mesh) in an enclosed or moderately dark environment.
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Observe the trailing/ghosting effect left behind the object as it moves across the screen.
