EA Games Brr/Buzzing Sound

[IceViceee]

Hello,

i need help. I have a Atmos System and always when i play BF1 / 5 or Mirrors Edge Catalyst then i have a strange Brr- Buzzing sound from my Speaker. In BF1/5 it is heavier then in Mirrors Edge. I have different solutions found in this forum but nothing helps
Change Soundbitrage to 16bit 41 - 48khz - no solution
update driver - no solution
Change from Dolby Atmos to 7.1 or 5.1 - no solution
Deinstall Nvidia Experience - no solution
unenable sound enhancement´s - no solution

can somewhere help me with this problem ? I have connected from the Graphic´s Card HDMI to the AV-Receiver (NAD T777v3)

[EA_Barry]

@IceViceee 

I would start at the GPU control panel and make sure that the digital audio settings there are as expected in terms of number of output channels etc. You can likely test the output settings and should hear bing or tone on each channel in turn. Your NAD receiver looks really really nice, I would love to have hardware integration of Dirac Live!!

It is a relatively complex piece of equipment and I assume you have the basics covered regarding its setup, here are a couple of PDFs relating to the T 777 V3: 

https://nadelectronics.com/wp-content/uploads/2017/09/T777v3_eng_QS_v15.pdf

https://nadelectronics.com/wp-content/uploads/2017/09/T777v3_eng_OM_v14FE.pdf

[IceViceee]

it is alright , the Channels are right with the NAD. any solutions ?

[EA_Barry]

@IceViceee 

This potentially an electrical grounding issue on your socket/outlet.

I'm no electrician, maybe a surge protector or some other power conditioning unit will help you prevent ground hum/loop.

With high end audio equipment, I know people use very expensive power conditioners but this is a much more basic issue. 

Something around 20euro might do the job:

https://www.amazon.co.uk/Belkin-BSV804-Protection-Extension-Charging/dp/B00OE45MVK/ref=sr_1_10?crid=...

https://www.amazon.co.uk/s?k=ground+hum&ref=nb_sb_noss_2

[IceViceee]

i use 2 Dynovox X4100 Power Conditioning. The PC is in the Master Slot and i try a Cable with Ground and without Ground. No Solution....