Game cheating is the way to go when you need to excel in a game

External Rainbow Six: Siege Cheat

This cheat does not have a bypass, but it is complete, and all you need to do is run the game with BE disabled and it will work. You can play around with it in offline stuff if you want.

This requires the DirectX includes and libs, but other than that you can just compile this as soon as you add the proper directories and add d3d9.lib, d3dx9.lib, and dwmapi.lib in the linker >> input settings.