Crackling / Popping sound in games

Jan 16, 2019
Hello everyone!

Video that shows my problem: 1nd - ( Sorry for low audio volume ) 2nd - | Also you can check other video on YT , this guy has the same issue as i.

I've had this audio isse for about ~3 years. It usually happens in games like ArmA 2/3, WarThunder, Metro 2033 and some other games.
I've tried to use different headphones, tried to install other OS ( 8.1, 10 [ ver 1607 ] ), but it didn't help.

PC specs:
Motherboard: Asus Maximus VII Ranger
CPU: Intell Core i7-4790K 4.4 Mhz
GPU: MSI 1080Ti 11G ( Previously had GTX 980 4GB ) I thought 980 caused the issue, but it didn't.
PSU: Chieftec 750W Bronze
OS: Windows 10 Pro ver 1809
16GB DDR3 1600 Mhz
Sound Card: Asus Xonar DX
Storage: 1 SSD (SATA III) 480GB, an old HDD 2TB WDC WD20EARX-00PASB0

It's weird, but i i have the same issue on my very old Asus laptop ( I also tried different OS: 7, 8.1, 10 ), that barely can run ArmA 2, but still.