Issue of GTK+’s Performance Once More in the Spotlight
CinePaint is taking a new direction to migrate away from GTK+ to FLTK and this has lit up a new discussion about GTK+ 2.x's speed problems on both Windows and Unix. The CinePaint project cited other reasons as well, like the non-elegance of the API, the bloated source that makes it difficult to debug it and thread-safe reasons.
