What do you mean never noticed?

https://www.techspot.com/community/topics/man-sues-sony-because-killzone-shadow-fall-wasnt-actually-1080p.204309/

Killzone SF checkerboard upscaling was nitpicked to death.

Is this class action lawsuit worthy

Oh the lens flares and bloom.

I didn't play that game. Most Pro games I've played apart from Cyberpunk 2077 which was just fuzz unless you locked the console to 1080p, seemed decent. God of War & GoW Ragnorok for example had brilliant performance modes. Maybe it was there but nothing as apparent as WuKong or these Unreal 5 games, I was looking into adding Jedi Survivor to my buy list but even on ps5 it's atrociously bad. I can't imagine how much worse it is without YouTube compression blurring it out the fuzzy and smoothing the oily movement. 

Tried to reply got this?

Parse error: syntax error, unexpected 'userid' (T_STRING), expecting variable (T_VARIABLE) or '$' in /data/home/ioi/vgchartz.com/assets/includes/gc-functions.php on line 1081

Last non VR game I played was Spiderman 2, that looked very good. I've read the DF review of Wukong though. What's the point of all these modes if none really work. What's the point of consoles anymore when Devs stop optimizing for the hardware. At least they still do for PSVR2. Fixed framerate of gtfo.

Hmmm, it's not letting me reply either.
At any rate, to answer your question, PS4 Pro typically rendered games above 1080p, where reconstruction artefacts are less noticeable.