And this is not even BIGlittle architecture ! All 8 are the same 
IIRC, the A83T has no SATA and the bridge chosen by SinoVoip's dev is the slowest available.
Well, in opposite to Lemaker the SinoVoip didn't adjust to sane GHz for the CPU, when the software is not ready.
Killing CPU-Core's instead of throttling and so on (see M2+ if you like)
Appart from that, they are not investing enough time to pick-up all the supporting-idea's from the forum.
There are so many tipps to make users happy, instead most complain.
Did you have a use case in mind for your M3?
Have you tried power it with the DC-in ?