It is sensitive to a very thin, consistent buffing film. The usual apply product/smear a bit/start buffing method won't work properly, because when the film between the pad and the surface is thicker than necessary (even with 3-4 pea sized drops of polish), it will be chunky, sticky.
But when you immediately spread it by pulling a very thin film, which covers your whole working area uniformly, it will work as a dream. It won't dry out, it will stay stable, workable. It ensures optimal abrasive contact and film stability when you quickly spread it very thin. I use a DA with it always on speed 6 - even when spreading.