Change Battlefield settings directory?

Hi @pommecatoo and welcome to Answers HQ!

I know of 2 ways.

You can move the entire documents folder as described in:

http://www.dummies.com/computers/operating-systems/windows-10/how-to-change-the-location-of-user-folders-in-windows-10/

or

You can create a symbolic link to move just the BF1 folder - this is fairly technical so if you want to do this you should probably Google your way to a good guide.