Ok, that´s strange. This must be enough envirement to handle the gfx of HOS. Let´s make some more tests.
So you can start HOS and game shut down when you click New Game.
What happens when you click Load Game, Options, Credits, Quit?
I have also looked on my NoxAppPlayer Test Envirement, what seetings is there for my installed HOS Application. But didn´t find any useful information for now. My installed HOS App has no extensional rights like accessing external storage or so.
At the moment it looks like, there is a special condition when you click new game, that´s trigger this shut down behavior on you app. So our next step to identify this behavior is to find a way to avoid the newgame process or to find the reason what deals this shutdown.
If you can click load game we can try to find a way to start your HOS with a savefile.
Luckily you have Android 6.0, so you have an integrated file browser.
https://www.cnet.com/how-to/how-to-access-android-6-0-marshmallows-file-manager/
My Noxplayer is simulating Android 5.0. I need to search first a filebrowser app.
Why we do this. It'looks like your system has no problems with the gfx, so my next suspect is, that we have problems with file access or permissions?
Before i continue here, i need to know if you can click load game without a shut down.