Created attachment 174668 [details] Resize artifacts SUMMARY When I resize window, I see black bar during the process and resizing feels laggy. It's not smooth. Every resize step is noticeable. This does not happen with firefox, dolphin and probably all other apps I regularly use. STEPS TO REPRODUCE 1. Open systemsettings 2. Resize OBSERVED RESULT Resizing is very laggy, choppy visually and generally unpleasant. EXPECTED RESULT Smooth resize as with other apps. SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 6.2.0 KDE Frameworks Version: 6.6.0 Qt Version: 6.7.3 Kernel Version: 6.11.2-arch1-1 (64-bit) Graphics Platform: X11 Graphics Processor: AMD Radeon RX Vega M GL Graphics
Some additional context: I tried to change settings in "kcmshell6 qtquicksettings" and noticed that with Automatic and OpenGL I see these issues very well. Vulkan doesn't have same black bar but it produces ghost image of old window state if I make it bigger (and still looks laggy). Software renderer doesn't seem to have neither but I'd like to use CPU for stuff other than rendering. Why have GPU if it isn't used for something it's intended for.
This is unfortunately a Qt bug deep in the core of how QtQuick works. They need to fix it.