I always had the impression that closing it, changing settings and opening the file menu (automatic DVD scan) are the major problematic parts in terms of latency feeling, in those regards it still stands where Firefox was before the sql database switch and no other player behaves as problematic in those key areas (though configuration a normal user shouldn't do so often anyways, so i guess user like me who need to constantly iterate in the options for testing things are more on the edge of a brain melt waiting till the config window is closing especially with a huge list of defined dshow chain rules)