Found a better ROM than stock GB Sense update
I flashed Deck GB AOSP ROM 1.0 stable and it works great! Much better (i.e. much faster) than official GB Sense update.
Flashed latest Tiamat Kernel and battery life seems to be comparable with Ricsims 3.70 Turbo w/ HTC 15 kernel. And everything actually works.
Also have it O/Cd to 1152mhz (any higher causes FCs and reboots) w/ Smartass goverenor.
Gonna try this setup for a couple of days before I pass final judgement, but it looks as this will be my DD.
And I can always flash back to RS 3.70 Turbo via Amon Ra if problems appear.
Linpack over 40 and Quadrant in the 1700s.
AOSP all the way!