I found the pacing to be ok, mostly. We're all used to bullet train tempo these days, with bite sized content fed to us in easy 1 minute long portions. So I find the slower pacing and deliberate build up to be a welcome change of pace (literally).
If you want to see slow, try watching films from the sixties or seventies.
In fact, one of the minor gripes I've had with the series, but actually also with the movie trilogy (to a lesser extent) and many other fantasy films and series; travel time.
It often appears as if locations are situated mere miles form each other, while in reality, for instance, Eregion and Mordor lie many hundreds if not thousands of miles apart, yet in the series, they appear to have crossed that distance (on foot) in a matter of days.
Nothing wrong with shortening travel to a couple of minutes for the viewer's sake, but often this is done too briefly, making it appear that a trek taking many days, will be ovber in mere hours.
I give you the travel through Moria in the original films. In the books this took many days, while in the film it appears as if they're in and out in a few hours. A simple sequence of them bedding down or simply resting plus a travel montage would work much better. And this would only take a minute or so of playing time.
As you might tell, it's a bit of a pet peeve of mine, but it's no less true because of that...
