Low quads w/ Tiamat:
If your phone is performing nicely (as you perceive it) I wouldn't worry about the number too much. Sometimes Tiamat gives me 800s, sometimes it gives 1300s. It always gets battery than SZ and I can never actually tell a diff in performance.
Hang on boot w/ Tiamat:
What is everyone doing when this happens? I haven't had that happen with this particular kernel, but when it does happen, 9x out of 10 it gets fixed by pulling the battery, holding the power down for a few secs, putting it back and rebooting.
A2SD:
If that turns out to be the culprit, maybe try this -
[ MOD ] Custom MTD Partitions by Firerat (resize Cache, Data & System) - xda-developers
Wifi:
Broke here too