Hmm, could it be that Ferrari's tyre degradation has something to do with the new exhaust configuration?
Before, Ferrari seemed to have better degradation than Red Bull and much much better than Mclaren, and somewhere in the middle between Sauber. Today it seemed they had just 2-3 laps better tyre management than their direct competitors and much worse compared to the Sauber.
Could it be the exhaust plume acting on the tyres?