Create a Windows 10 VM, pass-thru your nVidia pci-e GPU. Set Latency Sensitivity to High.
Set the following advanced setting on the VM to allow the nVidia driver to start, else you will receive an Error 43.
hypervisor.cpuid.v0 = False # you may also add SMBIOS.addHostVendor = True # or (don't add both) SMBIOS.reflectHost = True SMBIOS.noOEMstrings = True
Install VMware tools and the nVidia drivers.
RDP to your host and disable the VMware SVGA adapter.

Connect a HDMI Dummy Plug to your GPU. This will just force the GPU to output video to a port, else Parsec cannot capture video.
Install Parsec.
Enjoy!