The infinite scrolls works ok with mouse scroll wheel on my PC. I can move down through the list by spamming the scroll wheel although it's not particularly fast.
It doesn't work very well on my laptop touchpad, using the scrollbars to progress down through the list.
Page-down works throughout the part of the "infinity scroll list" that has been fetched. But pressing page down at the bottom of the list does not trigger a fetch of any more of the list.Page-up works fine - it takes you back through the list as expected.