Surely they do this with their own graphics cards if they have such software built into GFN then they likely have it built into their Nvidia Drivers for their hardware products?

It never occurred to me that they would. Though sadly I can’t afford a new gaming PC. My rig is from 8 or 9 years old. And the GPU was a former mining card that I rescued from ebay, lol. RX 580 8gb, 16gb DDR4 ram, and Ryzen 5 2600. Not bad but it’s showing its age with modern games. Also does not have RTX so some won’t even run like Indiana Jones. Only way to play is by streaming services. Lately been using GFN to play KCD2 and it’s actually quite good even on WiFi. Just playing it on my laptop and only occassional stuttering. Though granted I am only in the tutorial level and have not had many big battles yet. I have also tried Enshrouded and Medieval Dynasty and they work ok though it does stutter a bit.