Comment by awused

It's not just cross-platform programs that suck. Applications moving to gtk4 from gtk3 add an extra 100-200ms of startup latency every time because of OpenGL initialization and shader compilation (there is currently no cache), varying a lot depending on your CPU. Applications that used to open instantly now have have a noticeable pause, even if it's still short compared to the worst Windows applications. It's been reported multiple times for well over a year now and no improvements have been made.