It tends to be indistinguishable or strictly better in side by sides. Is the last time you checked it out back at initial release perhaps?
DLSS 3 still only looks fine on cherry picked screens: “It looks like DLSS 3's weakness lies in hidden geometry, where information is missing between two frames due to geometry overlapping another set of geometry while in motion. This can cause DLSS 3 to "shutter" and output ugly artifacts as it tries to fill in the void of missing detail.” https://www.tomshardware.com/news/dlss-3-early-review-rtx-40...