Light build quality is lower after splitting the project into two levels.

Development Architectural and Design Visualization
3

I’m not sure it’s that I think it’s something to do with it building with default settings. I’m using this to build the lighting is it something to do with this command?

You can use command line to launch the editor and bake lighting to save GPU resources for GPULightmass, especially video memory.

  • Engine/Binaries/Win64/UE4Editor-Cmd.exe “path o\your\project\yourproject.uproject” -run=resavepackages -buildlighting -allowcommandletrendering -map=/Game/Maps/MyMap.umap
  • Remember to replace Content with Game in the umap path