GPU Lightmass not working on Landscape

i’d not bake a 1 square km landscape, but i can confirm it’s baking trash.

note: the lighting is initially broken. the denoiser (oid) fails too and all components use a singular lightmap.

i did not use exposure compensation, but shot with a “proper light value” at ev 1,1. i mean… the exposure doesn’t matter for the bake. the light values do.