To sum it up, after this change the audio settings should look like this:
Master
Effects
Gunfire
Enviromental
Music
Radio
VON
I got the feeling that now are voices (campaing, missions) also under Effects, they should be also splitted. It's really bad approach to add all of this into one slider.
So please, this issue should be prior and addressed, after all you claimed to improve the sound experience in OFREPs.