Dying Light 2 has also just been updated to support DLSS3/FG, Reflex etc... and the devs have removed Denuvo.
https://dyinglightgame.com/news/update-1-9-0/
If Nvidia do enable it, It will be a tiny uplift in performance, Maybe even a regression.
An Nvidia engineer on either Reddit or Twitter, Can't remember which, Explained it like this...
The optical flow accelerator in Ada is 3+ times faster/more powerful than the OFA inside Ampere and even with that huge uplift in performance as well as using Reflex to reduce latency, Frame generation still introduces a substantial amount of latency so subtract the 3x performance improvement of Ada's OFA and then add much higher latency and much much lower "FPS" gain for an Ampere GPU, The overall performance would be terrible.
Maybe they could do something small but it will likely be a ways off as with this scenario they are for once hardware restricted.