I'm generaly suprised. For a Beta, this thing is running pretty damn smooth. Only problems I have found so far are TiBu locks up when batch restoring, which isn't a Rom issue, It's TiBu subtle incompatibility to ICS, and the launcher FC's while browsing through the widgets.
I live life by three rules. Rule one, Sh*t happens, rule two, sh*t happens on a daily basis, rule three, get used to the first two.