This is my opinion:
I think that happens with every ball, though some have faster meters. Pay attention to the break, if you are putting with a left to right break, your meter will probably be faster, and even more if you don't move the arrow, but will be slower when you move it far enough or if you don't move it at all and plan to click before to compensate for that break. I think it also has to do with the scale you are using and how much power you are using with that scale.
If the putt breaks from right to left, you can probably notice that meter is slower and you probably ding when you need a push or not push it enough if you want because the meter seems to be dragging a train. The putters are hard to ding, and the way WGT used for making it harder to ding is that one. When you have a left to right wind you can expect the meter to go faster and you end up pushing the shot, but with wind in the other direction or straight it can behave "normally". But in some cases, if you move the arrow close to a hazard, you can find that the meter does things differently. Say you aim close to the rough on the left and have a left wind, you expect the meter yo be faster as I said before... but nooooooooo.... it went at a normal or seemingly slower speed and you pull it and hit that rough anyway. With faster meters, left wind, you try to click before and sometimes you can't even get a ding, but a push. Next time, then you try to hit before, and you get a pull bigger than California.
These is what I think about the meter, it's all in the code. Maybe your best choice is to let the meter run before clicking to see how it will react and then take the shot. I may be wrong but this has helped me a lot and I get a respectable 89% GIR... but I could still be wrong.