[2021] Stellaris only starts on integrated GPU

Do you have two monitors connected to different video outputs?

DXDIAG is a program you run from the Windows search box on the task bar. After running it will open a window and start collecting info with a progress bar in the lower-left corner. When it completes click the 'save all information' button and save it to a file then attach that file here.

Please attach your Documents/Paradox Interactive/Stellaris/settings.txt and pdx_settings.txt .
From your Documents/Paradox Interactive/Stellaris/logs/ folder, attach system.log , error.log .  

Which monitor does the game appear on?  

I take it that is the one the Intel drives. If so that is listed first in dxdiag so I expect that's where the game appears.

In that settings.txt we see adapter=1 , is that something you put in there?

In the launcher is a monitor selection option, what does that show?


You say this does not affect other games, but not even our similar ones like HOI4 and CK2? Because I'd expect them to behave the same as this one.