I've had Geforce Now for over a year now and have completed The Witcher 3, Assassin's Creed Odyssey, and Death Stranding on it. I use an Nvidia Shield to play it on my TV. I've never had any problems with the streaming quality or latency. I could see that depending on location though, I'm playing in West Coast Canada. Some of the games I've been disappointed with the performance, Assassin's Creed Odyssey for instance couldn't hit 60 fps even after lowering the graphic settings. Cyberpunk 2077 has been amazing though, high fps and maxed settings, including ray tracing.

A few other things of note. 1080p is the max resolution. Unlimited Internet is probably a requirement as its about 10gb per hour. After 6 hours the session ends and you need to save and relaunch the game. Your entire Steam library is not available, its up to publishers to allow their games on it.

Really appreciate the answer thanks

FWIW, I signed up for both GeForce Now and Stadia, and find Stadia to be both easier to use and better-looking. For comparison, I ran Cyberpunk side-by-side and killed the GeForce Now version after a few minutes.

You bought the game on both stadia and steam/gog/epic?

Yes, for science. It was ~$100 to check if I can avoid spending $2k+ on a PC rig because I can do my casual gaming on a MacBook Air. Turns out I can, so it was money well spent.

If you're only testing compatibility/performance, and so don't play for long, you can request a refund from Steam.

Thanks for the info!