Combat takes a while in any system, as far as I can tell, simply because it has the most rolls and such involved.
There is also the factor that they are not yet used to the system. As they get used to it, it will proceed faster.
As for the stats -- No, I did not change any of the stats. The only creature that were even given varied stats were dragons, and that is because we gave 5 different versions, each at a different size, so the Dragon's stats were based on its age and size, not upon its level.