CesiumSunSky Rendering problems

When I was using the Cesium system, I don’t know what caused the Cesiumsunsky to have a very large solar exposure point, rather than a normal time change like the normal sun size.

I am a beginner with little experience. I have tried all the Settings in it, but there is still this situation, which makes the connection between the sky and the earth type of the scene not perfect.

Also hope to give me a guide, thanks ~CesiumSunSky

Have you enabled in “Extend default luminance range in Auto Exposure settings” Step 3 of Cesium for Unreal Quickstart | cesium.com? You can also watch the video that walks you through it.