Imported CubeMap stuck at 512x512 Max In-Game Resolution

I created an HDR texture at 4096x2048 in Unreal. It looks great mapped onto a sky sphere.

I exported the HDR, then reimported back into UE.

The reimported HDR is fixed at 512x512 and looks blurry mapped onto the same sky sphere.

In Level of Detail, changing Mip Gen Settings to NoMipmaps should change this resolution, but it does nothing.

This seems to be a long unaddressed issue that prevents the use of imported high res HDR in UE.


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Submitted a report. thanks