Hi!
No, it's not slow, atleast not for me. I made this mod primarly for the combination Omnimatter + AAI Industry + Angel's + Bob's, which takes hours before reaching fully automation. It has it's charms with slow starts, but sometimes I just want get the science going, and focus more on design than grinding.
But for the moment I've actually started a new game, a couple of days ago, using Amator + AAI + Angel's + Bob's without any quickstart, and I'd say that it's a very balanced start, there's alot to do even in the beginning, so it's not grindy. But if someone doesn't like that part there is now a quickstart mod, just to bring the player beyond the first 30-60 mins of the game. But they will most likely miss out on the better fuel values, since this mod only gives them enough to get science going.