Can't change the default audio source for the game audio

This is what worked for me, if you are using multiple audio outputs and want to choose where the game sound should come out from.

This is on Windows 10.

1.  (You can start the game now or on step 5, I don't think it matter much)
2. Go in Windows 10 settings
3. Go to "System"
4. Go into the "Sound" tab on the left
5. Go to "Other sound options" (should be at the bottom)
6. You can launch Battlefront 2 now (if you haven't already) in order to get it to appear in the app list 
7. In the Windows 10 settings, you should be at "App Volume and device preferences", with a list of apps in the middle
8. Look for Battlefront 2 and on the right choose the output you want the sound to come out from
9. Go back into the game Battlefront 2, you should now hear sound coming out from your desired output

I hope this is on topic and clear, and will help at least someone