Your PowerPoint slides are NOT your tele-prompter! In other words – do NOT read the words off your slides. A tele-prompter is a great tool for making speeches. But it only works when the audience does not see the words you are reading.
Here is an excellent video from T.J. Walker on this topic:
Remember his last words: Use PowerPoint filled with images just for your audience.
I repeat: Use PowerPoint filled with images just for your audience.