I asked C# only for curiosity. I will probably switch to C++ and UE4 (more attracting than C# and Unity for me), and keep Lite-C and 3DGS only as a fast-to-develop test bed because I am familiar with it.

as I remember earlier on the 3dgs home page it was mentioned that Lite-C is faster than C#, now it is compared only to scripting languages. I saw a couple of benchmarks where surprisingly C# was faster than C++.