The bot should be able to maintain sav 5/6 fairly easily. It should use primal when hits 6, use advantages/ca's until it gets back to 6, then use another primal. If you're not seeing that, then you have something off in profile, or running low fps on that session.
I don't know if you've seen it or not yet, but the reason I dropped using chain tabs out of my profile is that they don't go well with movement and dps'ing. If the mob moves/repositions/whatever in middle of ca's in chain tab, you can actually end up losing dps more often than you gain.
My main rational for using freeze is for the burst dps since I can pair it with CM. Also I don't have pet survival issues (why I don't use agi line) since I have a shaman for both my beastlords, and controlling pets isn't that hard.
As for my profile, the better gear you have, the better dps you'll see from it. I use it, so it's made more for the upper end of the gear spectrum. If you're not in at least hm/drunder hm gear and/or have a group built around boosting beastlords dps, you'll need to tweak it some.