External graphics card running at 0% followup  

@palatablesauce, 

It sounds like there is some HP security software installed which requires you to authenticate newly connected thunderbolt devices before they are allowed to interact with the x360.   

@mini-i5, Do you recall a method to bypass this? So far the enclosure and GPU seems to be detected just fine.

@palatablesauce, 

HP installs a thunderbolt firmware configuration tool on some models.

https://support.hp.com/us-en/document/c03725328

@mini-i5, The firmware configuration tool is incompatible. Maybe the issue has to do with the BIOS forcing this laptop to use the integrated GPU.

@palatablesauce, 

Resetting the embedded controller is something that worked for a few other people.

https://superuser.com/questions/1543310/usb-c-thunderbolt-3-port-not-working-hp-spectre-x360-15-df0322ng

https://h30434.www3.hp.com/t5/Notebook-Hardware-and-Upgrade-Questions/USB-C-Thunderbolt-port-not-working/td-p/6601769

https://www.reddit.com/r/spectrex360/comments/aodmd1/usbc_device_detection_issues/?utm_source=share&utm_medium=ios_app&utm_name=iossmf

@mini-i5, Sorry but I already tried this method beforehand and the issue still persists. I contacted HP support, and hopefully they will come up with another solution. This could be an issue with my particular laptop, though I don't suspect any kind of hardware damage.

@palatablesauce, 

Check to make sure your power usage settings are set to "Best Performance" in the Windows and Nvidia control panels.

@mini-i5,

I found something interesting in the NVIDIA control panel. For some reason I can't do anything with the processor settings to make sure that the diagram below doesn't link the laptop display to the intel UHD graphics. I don't know if this is important. Another thing I found out is that I can't even access the NVIDIA control panel while the integrated GPU is disabled.

@palatablesauce, 

To make the nVidia graphics adapter the primary graphics processor on the system, open up the NVIDIA Control Panel>Manage 3D settings. From the drop-down list under Preferred graphics processor: you can choose either Auto-select, nVidia, or Intel graphics solutions:

Alternately, you can click on the Program Settings Tab and set the graphics processor for each individual program installed on the unit.