I model what I do after SANS' classes, which do slides that way (https://sans.org - they're indirectly my employer). They get lots of feedback from students, and it tends to be positive.

IMO, it's striking the balance with not overwhelming the student, but also making sure that the slides can be referenced (and will be useful) later.

I think the important part is that the slides are cues, but not read. Vaguely stay on-track with the slides, but be interesting and explain things well enough that the students aren't boredly reading the slides, but are instead engaged.

It's a balance, though. :)