How fast people speak is more a cultural thing than a language thing. People in Texas, for example, speak more slowly than other speakers of American English.
Here's a study on it, I don't know if they included Texans or not: https://verbavia.com/blog/which-language-is-spoken-the-faste...
Here's a study on it, I don't know if they included Texans or not: https://verbavia.com/blog/which-language-is-spoken-the-faste...