Nvidia's DLSS has been a boon for those of us who hang on to old GPUs for longer than game developers want to support them, but a problem with AI upscaling is that its inferences subtly alter the look of games.
With DLSS 5, Nvidia has dropped the subtlety and made overwriting the original graphics the point, using "3D-guided neural rendering" to enhance traditionally-rendered graphics—or ruin them, depending on your perspective.