The mechanism of action I've seen is that sometimes OBS will start on, say, internal graphics, and you'll need to force it to run on your discrete graphics card

The mechanism of action I've seen is that sometimes OBS will start on, say, internal graphics, and you'll need to force it to run on your discrete graphics card in order to get it to screen capture your video game. This affects computers that have both integrated and discrete graphics (say, to save power on a laptop).