R9 280x toxic + afterburner: undervolt reset problem

[retek]

Hi all,
I'm here with my 280x toxic undervolted around 1100 mV and it's running very well: low temperature and consumption.

But I get a very annoying thing: if the board ceases temporarily to mine, either for the network or for the pool, automatic (I think) card's bios lowers the voltage for obvious reasons..
The recovery (not always, but sometimes) happens the "drama": the voltage is reset to factory default (1225 mV) and not to the one I set afterburner to say the least... stuff very annoying  ..

Do you have any suggestions on how to avoid or any workaround?
Thanks and good mining =)