The thing is that I DID try that. Still, the NVidia overlay still tells me that i'm using the CPU instead of the GPU.
*yea, the interface is in russian, but it should be understandable anyway*
Also, if you are talking about the place that I should be able to change the used graphics processor, well:
This is what it looks like.
And this is how it looks on systems that have actually two GPUs:
So I just don't have the option to choose one, because there is nothing to choose. For some reason, Renegade X just keeps using the CPU for rendering, no matter what I do