Nvidia graphics research just made a 2-3x gain in performance, and this time it didn't use AI

Nvidia published new graphics research that refines its ReSTIR PT path tracing method.

The approach uses algorithmic changes like reciprocal neighbor selection and duplication maps, not AI upscaling.

Nvidia says the method can deliver 2x to 3x better performance in some cases while also improving image quality.

If the gains hold in real games, path-traced titles could become more playable without major hardware changes.