That's what mine does.. Running Nvidia dx11 version it minimizes frequently and it doesn't go into tray it disappears into the background and I have to end task in task manger then log back in... If I run dx9 version it won't let me use Nvidia it makes me use integrated graphics with good fps.. But at also didn't minimize my game and even when I hit windows key to minimize it I was able to immediately get it back from tray. Did not get stuck in background. Windows 10
1. Right Click on Desktop
2. Select nVidia Control Panel
3. In left panel select "Manage 3D Settings"
4. In right panel select "Program Settings" tab
5. Under section 1., check the box for "only programs on this computer"
6. then hit the "Add" button and navigate to where Aces High III is installed and select "aceshigh11.exe". Repeat to add "aceshigh9.exe".
7. Go down to section 2. and select nVidia processor