Make sure you're using an ample amount... not too little, not too much...
Here's an article I wrote for working in warm temperatures or direct sunlight but the same techniques work anytime you're dealing with a product that's difficult to work with.
Tips for working in warm/hot weather or direct sunlight
One thing that can make working with any compound or polish more difficult is not cleaning your pad often...
If fact if you're working with a product and you're finding the buffing cycle to be very short one of the first things you want to do is start cleaning your pad after every section pass.
Work clean.