So, I don't think I'm understanding this correctly, does it have to be a separate machine? Seems to mention VM and VNC so I'm not entirely sure what it is!

Like, currently I dual boot into Windows for games, but I can also get into it from Virtualbox if I need to quickly use something on there.

Would I be able to use this with that? So I can use the internal GPU for my local Linux install, and then use the nvidia for the windows?