It's been my expirience that faster greens tend to allow the ball to run truer. The bad part is you can't putt the ball faster to take the break out of some putts for fear of missing. Faster greens require a more precise read, and focus on the speed of the putt.
I remember some years ago that an up and coming PGA player said he would prepare for faster greens by practicing his putting on hardwood floors. Tiger Woods was his name. He had a pretty decent career as I recall.
Me personally, I like it when the pros play on tough greens. I have always thought the pros preferred playing in easier, "birdy fest" conditions, and that winning a tournament in over par was an embarrassment. This, even though that over par win made them work a little harder. The idea that a course was set up to hard has become a convienient excuse for not winning for some of those players who are expected to play well everytime out.
Rickie and them find it intriguing to "Blame It On Rio".
I understand the big names who have dropped out don't want to expose themselves or families to Zika virus. But Zika isn't the only blame here.
Blame the PGA Tour, the wraparound season, and playing cram the last two majors into 3 weeks schedule.
Blame the IOC and IGF, they're the ones who created the fiasco of the Top 60 thing and using their own F- - - ed up version of "qualifying". Instead of taking the Top 60 on paper, take maybe the Top 20 on paper.... make it a field of 80 ish. And use some sort of Olympic trials sort of format and points system based on that season's PGA and European Tour and let the other 60 spots be "qualified"
That being said after this learning experience I think the Tours and IOC will work together in 2020 a little better... hell you could make the PGA the first major of the season for '19 and '20 and yank the bye week out of the FedEX Cup playoffs. Or play it a couple weeks later than usual.