I’m experiencing a lighting update delay in a Sequencer cinematic.
I have a character moving and rotating toward a movable light. When the character rotates and faces the light, the lighting response on the character/environment does not update immediately. Instead, there is a noticeable delay before the new lighting state becomes visible.
The light itself is not fading or being animated with a fade. The issue appears to be related to the lighting/rendering update, because the character rotation happens immediately while the lighting response seems to catch up a few frames later.
My setup:
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Unreal Engine 5
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Lumen enabled
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Movable light
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Cinematic created in Sequencer
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Character is rotating/moving during the sequence
I have already tried several approaches to force or improve the Lumen updates, including:
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Manually controlling Auto Exposure — no improvement
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Increasing/changing Lumen Final Gather settings — no improvement
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Increasing/changing Lumen Final Gather Update settings — no improvement
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Changing Lumen Scene Update settings — no improvement
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Using console/settings related to forcing Final Gather updates — no improvement
The problem is still present.
I’m looking for a way to make the Lumen lighting response update immediately when the character rotates, without the visible temporal delay.