Apparently Cyberpunk Demo was running with Raytracing on a 2080Ti - at 1080p with DLSS on due to GeForce Now limitations says PCGH (German PC magazine). I wouldn't focus too much on the resolution as GeForce Now can stream maximum at 1080p anyway so it's most likely a limitation of GeForce Now's streaming capabilities.
Also with most games that have ray tracing, post launch patches generally improved performance greatly. One way or another though, gonna need a beast to run this game at max with ray tracing.
https://www.resetera.com/threads/cyberpunk-demo-was-running-with-raytracing-on-a-2080ti-at-1080p-with-dlss-on-due-to-geforce-now-limitations-says-pcgh-german-pc-magazine.235237/
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850
