I used to work for a coach that would tell players "there is always a man on."  This has always stuck with me in all of my training when player seem to take their time on the ball.  "Time" never means take your time.

I constantly talk to my players about having an internal clock in their head about when and where pressure will be coming on them.  To me, its much like an NFL quarterback in the pocket after three seconds, eventually, they are going to get killed.  To work on this, I often countdown from three seconds when a player receives the ball.

Three seconds.. that can be an eternity on the ball.  You can take up to five touches in three seconds.  Yet we teach speed of play as playing in fewer touches.  This is counterproductive.  Some players NEED that extra touch to keep possession.  Some players NEED that extra touch to allow their teammates run to develop behind the defender.  Yet we brainwash players and drill into their heads that SPEED OF PLAY is playing in one and two touches.  

Work on the internal clock.  Work on time restrictions on the ball rather than touch restrictions. 

Coaches need to make sure that their players know that "PLAYING FASTER" and "PLAYING QUICKER" does not mean taking fewer touches.  Sometimes, three touches can be quicker than playing two touches.