I only experience this issue in KDE Plasma (Wayland)
I have a laptop and im connected to an external montitor, but my external monitor is stuck on 1680x1050 specifically, sure i change it to my desired resolution and press apply and it says its changed but it clearly hasnt (the hertz i can tell is lower aswell) this is extremely obvious when I reboot it resets back to 1680x1050, my drivers are updated and ive tried and tried but there really arent tutorials or popular fixes. Anyone have a solution? (again ive only had this issue in kde not gnome or any other de)