I personally found this kinda fun to fun around in, but I didn't think the RT was that impressive personally. Would rather use a different mod to replay it.
As of DLSS 2.5.1 NV will disable inbuilt DLSS sharpening and pushing for it to be applied via NIS.
So FSR is still a turd. As if people expected something different.
There's a curious option in Space Marine 2, where you can set DLSS/ FSR to native, and says it uses only the temporal antialiasing component of the selected upscaling algorithm:
I'm not aware of such option avilable anywhere else, though I rather avoid upscalers. Anyway, seems weird if so, why not offer it everywhere if a dev can just add it like that. Also, seems a great opportunity for testing and IQ analysis.