This Monday (July 6th), PSO2 ghost uninstalled itself from the Microsoft Store. I've reinstalled it, first from the Store and then through the Tweaker, but ever since the first reinstall the game's performances took a massive drop. I'm not sure of my FPS before the reinstall (since I never had issues with them or checked it out of curiosity), but now my maximum frame rate is at best 65 and continuously dropping whenever something has to load, not only with the same graphical settings as I used before reinstall but also with graphics at minimum settings. Checking my resource usage shows that they're all running at very low capacity, even during massive frame drops.
So what's going on here?