The courts are too slow for Federer now he's lost his footspeed in spite of how well he is hitting the ball.
People are saying his forehand isn't a weapon, they're wrong. The court is just too slow to hit winners on against good defensive players like Murray, Djoker and Nadal . Federer can't do what Agassi did at his age and dictate play because of the speed of the court. We see on indoor that he still has the best offensive game, but an offensive game is useless on a court this slow.
Federer's wins will only come at the WTF and Wimbledon when the roof is closed in the semi's from now on