When I Alt+Tab or use a Windows key to get out of a game (in this case World of Warcraft) and use a Windows feature or other program like Chrome, when I return to the game, I experience a 1-2 seconds black display.
This also happens when I use keyboard shortcuts to change volume and the Windows volume bar appear in game.
I checked for graphics cards updates and also disabled Focus Assist in Windows, but the problem still persists.
I plugged my monitor to my motherboard and it looked fine anyway, but with changed settings in game.
I have 2x GTX 1070 Ti, and my monitor is LG 29″ Wide Screen, and I run everything on Windows 10.
Do you have any idea or anyone have faced this problem ?
This is normal for exclusive fullscreen games. It has to reinitialize DirectX and have it take over the display again. Try using Borderless Windowed instead of Fullscreen if the game supports it if you don’t want to have this issue.
As for the volume overlay also causing the issue, John said below that either Windows or some program is trying to display something that is not the exclusive full-screen game.