You'd expect a game to be released in 2021 to have next-gen compatibility outright, but you'd be wrong.
Biomutant is part of the handful of video games released after the launch of the Xbox Series S/X and PlayStation 5 that won't support next-gen consoles outright. Instead, owners of Microsoft and Sony's newest flagship consoles will only be able to play Biomutant using the backwards compatibility feature, which shouldn't be that big of a problem but it is.
What usually happens when you play a game released for earlier consoles on next-gen hardware is that it plays better.
Unfortunately, fans are worried that Biomutant won't play just as well on the PS5 or Xbox Series S/X. The Issue With the Biomutant Next-Gen Performance One can only hope that THQ Nordic can sort things out by the time that Biomutant releases.
Popular gaming forum, ResetEra, has seen several gamers compile tweets from THQ Noric to try and piece together why the next-gen performance of Biomutant might pose a problem. In particular, one tweet stands out where THQ Norid says that Biomutant will not run at native 4K on the PS5. Instead, Biomutant will run on an upscaled 4K from a native 1080p.
Although this is better than 1080p at 60fps on the PS4 Pro, you'd expect Biomutant to be available at native 4K and not upscaled on the PS5.