Based on this page:
Edit Steam\steamapps\common\XCOM 2\Engine\Config\BaseEngine.ini
, and disable settings as appropriate. For a really quick attempt at just being able to get in game, I'd recommend (though this probably won't be playable) -
- DetailMode=1
- DirectionalLightmaps=False
- Distortion=False
- DropParticleDistortion=False
- CompositeDynamicLights=False
- ScreenPercentage=50.00
That last one will cause the game to render at a lower resolution and upscale it - if you want to change the games resolution instead, try opening \Steam\steamapps\common\XCOM 2\XComGame\Config\DefaultEngine.ini
and editing the following values:
- ResX=(add your preferred horizontal resolution here)
- ResY=(add your preferred vertical resolution here)