Well, you have two options that I know of: static lighting or LPV. Static lighting should support emissive lighting by clicking that option (Use Emissive for Static Lighting) and building lighting. This option only works for static lighting, hence the name, and static lighting requires you to build lighting. If that doesn’t work, I can’t offer much help, though perhaps try increasing light map resolution for your assets and see if that’s the problem. LPV supports rudimentary emissive area lighting by injecting light into the LPV from emissive materials, though this does give a low quality result as LPV stores lighting information in a low resolution grid, so lighting looks blocky. LPV also requires “r.LightPropagationVolumes=1” to be added to ConsoleVariables.ini to actually be available in the engine as it is an experimental feature.