Your slides are not a way to sneak more content into your presentation. They ought to help you communicate your spoken content better. Use them to summarise — not expand upon — what you are going to say.
As an audience member, my response to wordy slides is to feel that I ought to read (and even transcribe) the content. When I do that, I stop listening to you.
Maybe you have text-heavy slides because you want people to be able to have something to leave with or download later. If this is the case, can I please ask that you provide a hand out instead? A hand out that is significantly different from your slides.