I believe you’re correct that the GPU isn’t being engaged at all. For one I highly doubt it’s NVK because it’s certified as “Vulkan 1.3 conformant” meaning it’s a complete to spec implementation. The overly also say it’s using a “NVIDIA GeForce GTX 4090 Laptop GPU”… Then it also says that there’s 0 watts being drawn from both the GPU & CPU which is extremely odd.
Maybe it’s a driver issue?