I concur with what Target is saying, his understanding is correct. Data comes in with some lag, in a fairly random order, in more or less the same pace for everyone. However, there is a chance at regular PGC users (regardless of membership) data falls in quicker.
The update of profile stats is just the rendering that isn't done as often for non paying members. The data in our system is more up to date than so (except exactly when the profile stats renders).
Then there are a very few other things which are calculated on a daily basis, like DT loops, streaks, where people live and such more complex data.