Honestly curious, but of all the things I've heard people say about QT it could never be about poor performance, it's generally consistently regarded as the fastest complete GUI toolkit out. Even more so because the Linux desktop environment KDE is built in it and is consistently shown to be both the fastest and lowest memory of near all Linux desktop environments (and certainly among all the big ones), including ones designed to be fast and low memory. Where did this poor performance thing come from and am I missing something lately?