If anyone has encountered a problem where SceneCaptureComponent2D displays an incorrect image (without Lumen), here is the solution:
Enable Global Illumination Method → Lumen (even if it’s already set in the global settings, you still need to manually repeat it).
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Also, enable Reflection Method → Lumen.
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For Global Illumination Lumen, enable the SceneCaptureResolutionScale parameter and set the value to 1.
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Parameter “Use Raytracing If Enabled” → true
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Enable (Always Persist Rendering State), if you render from (Blueprint → CaptureScene)


