The two obvious answers to getting around a slower table are to increase your tip offset and hit the cue ball harder. The (perhaps) less obvious answer is to spin more and slide less. Especially in humid conditions, long draw shots are the first to suffer because you need the cue ball to slide all the way to the object ball with enough backspin to bite and come back. Follow shots into rails also tend to die on slower/wet cloth. If you play position using spin off the rails, you can avoid having to over-hit the shot to get back down the table.