The webmaster said, it is frustrating to land on a mobile friendly web page that takes too much time to load. The feedback is around Google still using many desktop signals for mobile ranking- including how fast a desktop page loads and not counting the speed of the mobile page.
Gary said to that, “we have nothing to announce, but if you think about it, there's no reason for us to stop improving our MF algos.".
As we all know, Google is testing a slow label on mobile results, so Google seems to be testing the page speed of mobile sites. But for that to be inculcated into the overall mobile algorithm- that is going to take time.