Audio is important in games, your Realtek driver / software is most likely outdated... motherboard manufacturers suck at updating it - Realtek UAD generic is the best way to stay up to
ASIO4ALL - Universal ASIO Driver For WDM Audio
Aggregate Audio Devices and Drivers for PC and Mac | Sweetwater
UA Connect with Volt Interfaces – Universal Audio Support Home
Realtek HD Audio Universal Service Driver [Download/Update/Fix] - MiniTool
Routing Mac System Audio to Virtual Channels in Console – Universal Audio Support Home