Path tracing is significantly more taxing even on high-end RTX 4000 GPUs compared to traditional ray tracing methods. Nvidia's real-time neural radiance caching for path tracing is designed to solve the severe performance hit. This new AI-accelerated method has been in development for a couple of years now and the first implementation could soon be featured in the Cyberpunk 2077 expansion Phantom Liberty.https://www.notebookcheck.net/AI-accelerated-ray-tracing-Nvidia-s-real-time-neural-radiance-caching-for-path-tracing-could-soon-debut-in-Cyberpunk-2077.719216.0.html
Interesting...to this day C2077 remains one of the worst optimized PC games right? Yet they don't hesitate to add graphic features that take even more processing power.