Learn how to use new GPU lightmaping in Unreal Engine - Evermotion
Tutorial on GPU Lightmass in Unreal Engine 4.26
GPU lightmass point lights are dim compared to stationary or moveable light with same values. - Rendering - Unreal Engine Forums
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
GPU Lightmass Global Illumination | Unreal Engine Documentation