Hi Chase. I'm Greg, 10 years awarded Windows MVP, here to help you.
See how to configure dual graphics on XPS 8940:
https://www.dell.com/community/XPS-Desktops/XPS...
https://www.dell.com/community/XPS-Desktops/Dis...
https://www.dell.com/support/manuals/en-us/xps-...
Update your drivers and BIOS using Dell Update or Support Assist whichever your model has installed.
Feel free to ask back any questions. Based on the results you post back I may have other suggestions if necessary.
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