When evaluating universities for their CS programs before choosing one, accent was a factor in my choosing. One university seemed to only hire grad students to teach since they did not want to pay competitively for professors from the field. Theses foreign grad students did not have a love for teaching (that I could observe).

The university I finally chose did pay competitively to the field, most loved teaching and their research. Yes there were still a few with an accent which pronounced my name wrong, but they've had at least some speech therapy on the side to get better.

I think that foreign professors that teach should take part in a speech therapy program for the benefit of the university students. It truly is a cognitive load, and I already have difficulty in hearing and comprehending words as it is without any particular accent.