It reminds me Plague tale requiem where only PS5 got massive performance improvements with patches. Like Alan Wake 2 this game was obviously optimized on Xbox for launch.
It isn't true. A Plague Tale Requiem had massive performance improvements on all platforms, especially on PC, the game had a serious CPU bottleneck and a Zen2 was unable to exceed 40-50fps in some parts: cities, areas with lots of rats , etc. That's why there was no performance mode at launch, even now the consoles have moments where they have CPU limitations (the number of rats was also reduced).
On PS5 it seemed that the improvement was greater because the framerate was locked and the framerate drops were less frequent and it had gained a few fps.
The gap between both platforms did not change with the updates. In fact, with the framerate unlocked, the difference was greater. Sometimes it could be sparse (4-5fps) but other times it was very large and consistently so.
My feelings about Alan Wake 2 and A Plague Tale: Requiem are that they simply work better on Xbox because they are competent developers and the machine's capabilities, and also because they are developers familiar with optimizing for PC; Xbox benefits from this, coincidentally the games that run the worst on Xbox are often games with terrible optimization on PC (Callisto Protocol, Hogwarts Legacy are terrible). Maybe in a future analysis they will prove me wrong, but I think that PS5 will at best improve its average framerate in Alan Wake 2, but I doubt that they achieved a 60fps lock in areas where it was running at 50fps. Sometimes cross stuttering in some PC games (like Atomic Heart) affected Xbox Series X. A Plague Tale It is possible that Asobo had a preference for the Xbox version, but... Alan Wake 2 NO.
It was always shown on PS5, users even asked Remedy if something was happening with the Xbox versions, even in the latest patch note they continue to fix bugs that are in the Xbox Series version and not in the PS5 version. I highly doubt that the Series X version is the developer's "preferred",
From the beginning it had more late patches and bugs that had taken longer to correct.
Maybe I'm wrong, but I have the feeling that when we see examples like A Plague Tale: Requiem or Alan Wake 2, where they are generally polished games and without being "broken" on any platform, if Xbox has the advantage on PS5 it is never solved , because it is a difference in power.
However, with several games where there was a much superior version on PS5, there were clear signs that the Xbox Series X version was broken. Examples? Callisto Protocol seems the best to me. DF discovered that when they already had a stable 30fps on PS5, on Xbox it was going at 20-25fps (currently it's a pretty stable 30fps, not sure if it's the same as PS5, but definitely better than at launch), and the updates were improving the game massively on Xbox Series After an update, RT was applied on Series X but with a much lower quality result than on PS5; later, in some unknown update, the RT was almost identical on PS5/XSX.
In A Plague Tale the situation is completely different. There was nothing "broken" about PS5. Simply if in an area on PS5 it dropped to 33fps, on Xbox Series X it was 40fps. After a few patches the performance improved and on PS5 the average was better, but with Xbox and a solid lock, it is impossible to know if these were general optimizations or specific to PS5. Although the fact that it maintains the advantage in performance mode (60fps) and is accentuated with the unlocked framerate should give us a clue.