not you Infinito...you are dead on here.
when my 12' bird putt on #1 came up 6 inches short, i remembered this post you made...so i think "lets just putt slow/normal and see what happens".
keep in mind some of my putts were tap ins and i'll never know what speed was really being played on that green, but i did clearly play "fast" greens on 3 of my birdie putts.
it would be unfair to say exactly which 3 greens putted fast, and for all we know its random during the round....but i stood fast putting normal/slow and i only had 3 putts race 5 or 6 feet past the cup.
definitely a new twist, and i've never experienced this in any other round except this weeks 18 hole single play.
gl