I have noticed that wiki points are a but messed up.
First screenshot shows that I have a total of 79 points.
Second Screenshot is of the Top Contributors for Slender: The Arrival. I should be 2nd in the list, but nowhere to be seen.
I also have the feeling, that if you simply Edit a page, and make 1 change, you get alot of points.
For example, if you goto a person page, and Simply add their last name, you get alot of points. added last name, and Gender to male and received 13 points, I have received more just for setting the Last name.
It could be slow due to a completely rewritten site, and all kinds of indexing services and robots (Google) are checking the site out, due to rewritten pages, causing some slow down. At least this is what happened on another site I was part of that got a redesign.