I am also trying to eliminating the problems. I just reflashed twice last night to find the problem. So far my device is running more less CPU consumption. I took out a bunch of software during my restoration.

One of the problem is my MicroB stopped its kenetic scrolling.
Solution is uninstalled: Bluetooth HID

Hildon-home hogging up the CPU:
Solution romoval of widgets: ConnectNow, Ipaddress, Sleeper, clockWidget (this is not yet confirmed i'm leaving it on for 24hours to see if there any increase in CPU usage)

Stuttering and slow while sliding home screens::
Solution: Transition control modification

These are what I've tried and works so far.