Hello.
Is decal uses reflection capture map? Reflection capture map from skylight can be used too?
Do I need to add reflection actor near decal actor to get better result?
Deferred decals modify GBuffer properties like BaseColor, Roughness and Normal, so they operate seamlessly with reflection methods.
Note that you need to use DBuffer decals (Renderer project setting) if you want decals to affect lightmaps or stationary skylight.
Thank you Daniel!