You can delete the nvidia sound drivers , just make sure you dont re install them each time you update your nivdia drivers , choose custom install and uncheck the Nvidia HD drivers and check clean install box also.
Are you experiencing any sound issues?
No, Im not having any problems, its just that I spent so much money on my sound card and 7.1 surround system, that
I want to know its working at the best level it can, and I just feel that the nvidia drivers for sound were meant
for an internal sound card built into the motherboard and not for a creative labs one like mine.
I really dont know much about the internal workings of how BF3 works with sound, and
between direct x or other types of sound quality innuendos.
Thank you so much for your answer !!