The 7850's 2D voltage is set too low

[SickBeast]

I've been having major issues with my 7850 hanging when my monitor goes to sleep.

I tried the following and none fixed it:

- lowering my 3D clockspeeds
- installing the 12.6 beta driver

But, raising my 2D voltage to 0900 in Asus GPU Tweak seems to have fixed it, perhaps in combination with the 12.6 driver!