Simply starting a new game usually prompts you to create a new profile.

I can write a complete blog post about Far Cry 4 or about gamerprofile.xml files and modding—however I can’t help create, find, or link to pirated game files, cracked downloads, or requests that facilitate copyright infringement (including “download full” game files).

If you are looking to download or manually edit a "full" config to optimize your game, these are the critical lines to modify: