The Resident Evil 4 remake arrived with a host of issues on launch, with image quality problems, inconsistent performance, ugly screen-space reflections and controller response issues. The underlying game was definitely a successful, attractive effort, but lacking a final pass of polish. The recently released title update 1.004 adds Mercenaries Mode and fixes for many of these issues - here's the current state of play.
The most prominent launch version issue was image quality, with all console versions suffering from a noisy look and PS5 seemingly afflicted by additional reconstruction woes. The new patch makes changes in this area, but the final results are perhaps mixed at best.
On the plus side, the PS5-specific issues have been resolved to some degree, with a sharper look despite some artefacting, but weirdly the Series X/S releases are now worse than their launch versions. The Xbox Series releases now sport a sharper appearance with substantially more aliasing. All resolutions are the same as launch, with a 1080p/1440p split on Series S (performance vs quality modes), an 1800p/2160p split on Series X, and a 1944p/2160p split on PS5, so this all comes down to differences in image treatment between patch 1.002 and 1.004.