I can't say much about that particular voice because I almost never used chatGPT's voices. They are too slow. I need 1.5x speeds even if I have to use a worse

I can't say much about that particular voice because I almost never used chatGPT's voices. They are too slow. I need 1.5x speeds even if I have to use a worse voice. I am a TTS power user, listening to all online text since 2010s. Maybe GPT-4o has a more flexible voice, perhaps you can just ask it to speak faster.