The key concept is this The lower the Stimp, the slower the greens. The higher the Stimp, the faster the greens. Most PGA Tour venues have green speeds of around 12. When golfers talk about how fast the greens are, or the speed of the greens, they are referring to how easily the golf ball rolls across the green, therefore, how hard they have to be to putt, for the ball to reach the hole.
