Really really boring, slow moving.
Cassian is an unlikeable character. Visiting a brothel and murdering two people in the first 10 minutes of episode 1. Is this really suitable for 12 year olds?
Most scenes can be edited to get the emotional drama and move the story forward without all the boring talk talk talk.
The dull dull scenes in the ISB boardrooms with the unnecessary side chatter about nothing important (or interesting), the dull dull scenes in the Mon Mothma plotting scenes.
Glorious visuals though.