It depends on the lecturers. I have had some rubbish lecturers who just rambled on about nothing, others who just read the slides but also some really good ones that are able to engage you in the lecture. I think it also depends on the course. My course is mostly wider reading, so we have to study by ourselves, whilst some of my flatmates are mostly contact time based with 20hours a week. The contact based courses tend to have lecture slides read to them because most of the information that they need to know is in them, mine however tend to have vague lecture slides that make you read around the topics, we are given the essentials.
You could have a look to see if your university offers a feedback platform. My university has unitu where we can post suggestions and issues. Other unis have an email or person you can contact with feedback.