Comment by bbatha

I'm also a fast listener. I find audio quality is the main differentiator in my ability to listen quickly or not. A podcast recorded at high quality I can listen to at 3-4x (with silence trimmed) comfortably, the second someone calls in from their phone I'm getting every 4th word and often need to go down to 2x or less. Mumbly accents are also a driver of quality but not as much, then again I rarely have trouble understanding difficult accents IRL and almost never use subtitles on TV shows/youtube to better understand the speaker. Your mileage may vary.

I understand 4-6x speakers fairly well but don't enjoy listening at that pace. If I lose focus for a couple of seconds I effectively miss a paragraph of context and my brain can't fill in the missing details.