Where and in what context did Guido van Rossum say "If you want your code to run faster, you should probably just use PyPy."? [closed]

PyPy's main page states that Guido van Rossum has said:

If you want your code to run faster, you should probably just use PyPy.

PyPy's home page does not refer as to where or in what context this statement has been made. Did he say that in a conference, a face-to-face talk with someone? What was the surrounding topic anyway? Was it about the performance of Python?

Why did Guido van Rossum call it Python?

1989 Python He attributes choosing the name "Python" to "being in a slightly irreverent mood (and a big fan of Monty Python's Flying Circus)".

Where did Guido van Rossum create Python?

In the late 1980s, Guido was working at Centrum Wiskunde & Informatica (CWI), a mathematical and computer science research center in Amsterdam, developing a distributed operating system called Amoeba.

It's from his talk on type hints at PyCon 2015: https://www.youtube.com/watch?v=2wDvzy6Hgxg&t=16m52s