Alrighty then. Finally got around to making some gameplay vids comparing xCloud with GeForce Now. In the post above I show the image quality with screenshots taken on the phone. This test is to demonstrate input latency, responsiveness, and game feed consistency.
Gears 5, xCloud:
Currently unplayable due to input latency. In it's current beta form, it's about as performant as OnLive with UT3 around 8 years ago. They have some work to do.
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DOOM(2016), GeForce Now:
The responsiveness of GeForce Now is incredible. This is despite the input latency from going from Bluetooth controller to Phone to WiFi to Server and back. I occasionally missed secondary fire shots and some ledge grabs, but nice and flickable aside from that.
*Note: GeForce Now has been in "beta" for over a year, so better performance is to be expected. I didn't expect xCloud to be unplayable, even early in the beta stage.