Hi,
Maybe this needed stating earlier, when UE5 came out many new features like Lumen and Nanite can cause failures in LGPU. These failures are not documented
Please remember that the original base code was written based on UE4 version 4.21 to 4.26.
Lumen was introduced in UE5 as an ALTERNATIVE to baking. LGPU has been through community effort to made to work along side Lumen.
All the current work is supported by the UE community and the Nvidia CUDA code has been upgraded from UE4 to UE5 and will remain the same.
The core code will have to REMAIN the same to support both UE4 and UE5
The fact that new UE 5.3.2 onwards Nanite Displacement causes LGPU stop with an assertion that the input data is wrong.
Nanite/Lumen is NOT baked with LGPU as they are entirely different functions and the addition of Lumen to Static Meshes can cause many problems.
Therefore it is reasonable to say the Nanite and Lumen are not supported by LGPU the functions are tolerated.
The advice is to just turn off the Nanite/Lumen function causing the problem
The case of Epic GPU Lightmass may not be the same but is EPIC supported, not community supported