Understand that it\'s different for everyone, Mezasa. If for you, no compatability mode runs best, then good for you... but most people need to change it. Also it seems that, the higher spec machine you have, the worse PS runs at. Also it doesn\'t matter if you\'re on dialup or broadband, you\'re still likely to experience lag in some areas. This is generally the case, however like I said, it differs for everyone.
Bear in mind that this is a tech demo and there\'s no one solution to everything.