Just when you thought you're where out, they pull you back in :) Microsoft has seen quite a bit of irritation from their users-base with their latest updates. In fact, the latest update that actually would fix most the problems now creates a new multi-channel sound issue in games.

After the last big cumulative update caused by searchui.exe among other things for high CPU load, Microsoft recommended to postpone or undo the installation and offered with KB4515384 a patch for this and other problems. But here too, things are not going according to plan. Microsoft has confirmed that Windows Update KB4515384 is not rendering multichannel audio correctly. People experiencing problems will notice that their audio does not sound the same as expected. Other users are saying that the update has caused problems with network adapters, search, Start menu, Action Center, USB connections, PINs, and more

Gamers report that OS Build 18362.356, September 10, has corrupted audio playback in games. More precisely, the volume of the games is quieter than one would expect. Microsoft is aware of the error and is working on a solution. The whole thing is caused by a change to Windows 10 in cooperation with audio chip providers to render multi-channel sound. 

The workaround is to temporarily disable multichannel sound in affected games and play in stereo. If you use third-party setting software, you can also switch off multi-channel sound here. Also, virtual surround sound modes may be affected. Microsoft is working on a solution to the problem and deployment is expected by the end of September.

Guys, delay Windows 10 updates if possible if they do not contain critical security holes.

Source: Microsoft

Windows 10: Latest update to patch issues is causing problems with multi-channel sound in games