Artifact when rendering high-resolution images with Lumen and Movie Render Queue

Artifacts when using Lumen at 8K equivalent resolution and rendering with MRQ. 8K equivalent, because the same issue occurs when the resolution is set to 4K and the Screen Percentage is set to 200. 2K + SP400 as well.

The same issue will occur no matter which Anti-Aliasing Method setting is used for MRQ.

Users have informed us that in large scenes, artifacts appear to occur in 4K as well.

1. Open any level. In my test, used Minmal_Default in Starter Content.
2. Rendering Deffered Rendering at 8K or higher resolution with Movie Render Queue.

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