The mod is in the FAF mod vault. In the FAF client, there is a tab called "Mods." You click on that. It should show up on your screen as one of the highest-rated mods. Or you can search for the word "NVidia."
You can download it through the FAF client and then you also have to enable it (or it won't be turned on).
The key bind for the console is ~ by default. If you never changed it, it will still be ~. Just start a game and then press ~ while you are in the game (while you can see your ACU, not in the lobby)