[2022] Game selects Integrated graphic card by default and it cannot be changed

You can also try this Windows option:

1. Navigate to ‘Settings’ > ‘System’ > ‘Display’
2. Select ‘Graphics Settings’
3. Select the ‘Browse’ button and locate the Darktide executable (Program Files (x86)\Steam\steamapps\common\Warhammer 40,000 Darktide\binaries)
4. Select the ‘Options’ button
5. Choose ‘High performance’ and save your changes

You can identify which GPU is being used by Darktide via your launcher.log. Instructions are here under “Ensure Darktide Uses the Correct GPU”: "https://support.fatshark.se/hc/en-us/articles/7709662432413--PC-How-to-Improve-Your-Performance-in-Darktide