Yeah, Moffat worked best when he had more time and energy to focus on just one or two episodes at a time. He still had some gems during his showrunner era (for me, outside of the Christmas specials, "The Eleventh Hour," "The Time of Angels"/"Flesh and Stone," "Heaven Sent," and "World Enough and Time"/"The Doctor Falls") but his quality definitely dropped overall, even outside of the arc episodes.