Professors with thick accents

First off, I don't want to dunk on anyone who's first language isn't English, I admire how much effort it takes to even learn a second language in the first place. That being said, I just can't deal with this anymore.

The professor for one of my classes is a Vietnamese man with an extremely thick accent and a lisp, and I cannot understand a single thing he says. This is a common complaint with the other students.

The slides he uses for lectures are extremely bare bones, and most of the information is in what he says. This means that his lectures are essentially pointless and barely anyone shows up to them because why should they? Why bother going to a lecture if you know you won't be able to understand a single thing that's being said?

From what I've heard from other students, he is very sensitive about his lisp and accent. So if anyone tries to bring it up, he gets upset.

I've been getting through the class by pretty much teaching myself all the material. I'm just a little bit irked that I am paying thousands of dollars for this class, and I can't even understand the person who's teaching it :/