yeah Geforce 6200 has the same bad result here

(hopefully I can upgrade my pc soon...) but I can get the same if I apply some more complex shaders in 3DGS too. so imo it requires careful programming to meet low system requirements, and usually game engine demos are rather for representing the max quality achievable currently... in contrary, by Neoaxis I could get good performance even on my old notebook when lowered some settings to a still acceptable quality (unfortunately I don't like its scripting system)