I mean, you can go on the PS store and find lots of indie games with terrible graphics and performance (and lots of great ones too), if you are talking about bigger titles the the recently released Gotham Knights had some pretty bad performance issues but this is mostly down to optimisation rather than the PlayStation struggling with the graphics. The PS5 (and Series X for that matter) are basically equivalent to a mid range PC from about 2 years ago, fantastic bang for your buck though. Bad graphics tend to be more about the developer rather than the hardware, either a game is not well optimised, not well funded, not well designed or overly ambitious, perhaps even a combination of all of these and ‘bad’ is also subjective , some people think 30fps games are bad and janky but others are fine with it