Unreal 4.27 adds multi-GPU support for lightmass building | Puget Systems
Tried GPU Lightmass to bake the lighting. It's insanely fast and gives better indirect lighting and shadows. Baked lighting for a 3bhk within an hour. Rendered 360 images to create virtual tour
UE5 GPU Lightmass/Pathtracer Strange Shadows - Architectural and Design Visualization - Epic Developer Community Forums
UE4 - GPU Lightmass archviz test - YouTube
GPU Lightmass Global Illumination | Unreal Engine 4.27 Documentation
GPU Lightmass Global Illumination | Unreal Engine 4.27 Documentation