win10 After updating the19.1.1 driver or 18.12.2, play dota2 in vulkan mode. Press alt+tab to the desktop monitor to black for about 4 seconds. Normal after switching to DX11
dota2 with vulkan Borderless window mode Press alt+tab to the desktop monitor to black for about 4 seconds the same black screen during the game when i want to set up the game.
