hi @Maddjon ,
The only work that has that I have carried out is creating the patch for
GPU Lightmass not working on Landscape - Development / Rendering - Epic Developer Community Forums (unrealengine.com)
This was tested by other developers
The section that really interests me is
Luoshuang’s GPULightmass Unreal Engine 5.4.3 and 5.4.4 patch (LGPU)
Most of my time now is devoted to supporting Ureal Engine Fortnite (UEFN), when not supporting LGPU and probably better to put question in Epic GPU Lightmass as this is out of my depth
Thanks