Building lighting does not remove preview watermark

[Arkiras]

Static lighting is most likely disabled then, please see this post:

Baked global illumination in UE5

Lightmaps should still work. Make sure you have the following settings: Allow Static Lighting is set to Enabled (in Project Settings) Dynamic Global Illumination Method set to None (in the Project Settings and/or post process volumes) Force No Precomputed Lighting set to Disabled (in the World Settings) (If “Force No Precomputed Lighting” is greyed out and you can’t change it, that most likely means you are using a World Partition level, which doesn’t support static lighting.)