I've seen few apps anymore whose performance is bounded it by the choice of UI framework. If they're slow, it's usually because of design choices, like making

I've seen few apps anymore whose performance is bounded it by the choice of UI framework. If they're slow, it's usually because of design choices, like making common user interactions wait to retrieve data. Yes, games are an exception. But for the majority of software that is concerned with displaying text, it doesn't matter a hill of beans if you use a cross platform framework. We're far past the days of slow Java AWT apps.