The same issue on AOKP milestone 6 and therefore I changed to Stock ICS LQ8. I am really looking forward to see the next custom releases based on new stock drivers that do not have such issues. Most annoying were the browser freezes.
Nevertheless great work from devs and I will be back soon...
Beside this, I experience
- sometimes the boot animation is not shown (and the Tab seems to freeze sometime during boot, sometimes, suddenly the unlock screen appears)
- as reported by others the Tab freezes while in standby (especially over night while recharging)