Hello Jace Culp.
Thanks for your reply.
It seems that the desktop computer doesn't have the feature as the laptop which is called NVIDIA Optimus so it seems hard to use two graphic
cards like a laptop.
If you can't switch it in Nvidia Control Panel maybe you can try to use the way that other people using the Graphic Card without the output like
P106.
Connect the HDMI or DP port to the motherboard.
Setting the UHD 770 as the default output in bios. (Different Motherboard have different settings it's mainly in the Advanced -> Chipset
ConfigurationPrimary display set it as IGFX for the detail of this setting you can contact the motherboard's manufactory)
Install the driver of UHD 770.
Now Windows will use the UHD 770 as the default setting try to set it again in Windows and Nvidia Control Panel.
If it works it seems that you will lose at least 10 percent performance when you use the 4070ti.
If there is anything not clear, please do not hesitate to let me know.
Best Regards,
Tommy-MSFT | Microsoft Community Support Specialist