ApexPC:
Interesting. I use /1.30 as my standard for tournament speed greens for flat putts over 5 feet from the cup. On some courses, like Merion, I find using /1.2 or /1.1 works better.
With my putter, the L 77+ Nike Method 00, and ball, L85+ Nike 20 XI-X RZN Vapor, inside of 5 feet I usually add a foot to the putt distance and miss the ding to allow for any break.1
I used 1.3 on tournament greens when I was a tour master but legend tournament greens are a bit faster and so I use 1.35 as my starting figure. Of course that varies from time to time, but it's usually a good start. I use 1.1 on fast greens and 1.2 on very fast greens. I wouldn't even dream of using those on a tournament green, certainly not at Merion, the putt would end up on the next tee!
I add 6ins to downhill putts and 12ins to uphill putts. I used to aim off and also miss ding when I used the Nike 001 putter, but since I switched to the Versa I've found it insists on the ding or I miss.
Then of course there are variables on some holes, Olympic for instance I usually double the bias and I have more red notes on that course than any other.