As Guru3D's
Warkratos discovered, the new GeForce Game Ready 610.47 adds three DLSS 5 settings. These are DLSS-NR, DLSS-NR Streamline, and DLSS-NR Presets.
To find these strings, you'll have to use the Nvidia Inspector Tool. And, in case you're wondering, no. You cannot force DLSS 5 in any game right now. Even if you enable the preset via the tool, you won't get any DLSS 5 effects in...