Oh, well neat! This still doesn't help much with the initial display after a list changes, does it?
It doesn't. But the trick here is that the little tweak affects any PLM (no matter how large) which might be useful for 'medium length lists' (such as the class list in a browser) on low-end machines.
Yes, very helpful. The LargeLists patch has always helped with lists of all sizes, too, by the way, including the pause when a list's contents change. Thus LargeLists has more code, but does strictly more.
Lex