It may depend somewhat on the speaker as well as the audience, but in my experience audience members zone in and out during meetings. The mostly-passive attend

It may depend somewhat on the speaker as well as the audience, but in my experience audience members zone in and out during meetings. The mostly-passive attendee may have little interest, but if the slides are changing automatically (by your action), then it's possible a new slide my grab their attention. If you leave it up to them, some of them will never flip past the first slide on their own.