Depends on the podcaster. Usually between 1x and 1.5x and rarely higher than that unless I'm pressed for time.
It makes me wonder how much of a pattern there would be based purely on the listener's birth location and general regional cadence. I know I have a tendency to speak too quickly for some people in my native English, and also in languages I've learned later in life. Perhaps there are people who'd like a 0.4x button for interacting with me ;)