That is not what I said.
The DRS is set for 2160p in this game… that is how DRS works… you set a target resolution (2160p) and how aggressive it will be… after that the resolution is dynamic choose by runtime based in how much the GPU can do to reach the target framerate.
If the GPU can’t do 60fps with the resolution it will drop a bit (the bit is different for light or aggressive choose).
That doesn’t means the target resolution will be reached… the GPU can stay below that making you think the highest resolution is lower than target resolution.
Yea, I see what you're saying. Makes sense. And then I think they probably reconstruct up to 4K after that fact? Not sure.