KDisplay-menue broken in systemsettings

Hello Roman,

with a fresh install and a build of KwinFT and its dependencies today, I've notice that the KDisplay-entry in systemsettings is reporting a QML error while loading the QML-file and also an "invalid KPackage kcm_display" message. Is this a known issue?

Another somewhat related observation is that I see less fps if the refresh rate diverges between the destkop (165 Hz) and the game (120 Hz). If I set both to 120 Hz, I get 5-7% higher fps in an in-game-benchmark. I had assumed that the refresh rate would make no difference, is this expected by design or a bug?

OS: EndeavourOS 22.1 (Apollo) + x86-64-v3-Repository + dependecies compiled from source with GCC 12.0.1 20220411