When I change a setting related to KWin (for example, KWin scripts), the whole desktop starts stuttering (except for the mouse cursor). I don’t know if there’s a technical word for it, but it’s like a game having a massive and continuous FPS drop. After some head-scratching and googling, I’ve realized it’s very likely happening after the kwin_x11 --replace command, since typing this in the terminal causes the same issue. But I haven’t been able to find anything else.
KDE Plasma version is 5.22.5, kernel version is 5.13.19-2, and I’m using X11 for the “graphics platform” (guessing the translation, my OS is not in English). Let me know if you need any other information about my system.