Interestingly, the demo was apparently running ray traced visuals, and was utilising Nvidia’s Deep Learning Super Sampling (DLSS) in order to offer playable frame rates that will make enabling such fancy effects actually worthwhile.
The recent versions are much better. But it also depends on the engine. I haven’t played Cyberpunk2077 since release, but there the trailing shadows of moving people and cars were very visible. Hopefully these issues are a thing of the past.