I have this LLC issue with other BIOSes, not only 1201. In fact I had that with other ASUS boards too.

After finding lowest stable load Vcore with LLC enabled, I choose one of the 2 aproaches to deal with light task/idle BSOD.

- Raise Vcore (usually 2 notches)
- Enable C1E and let Multi on Auto

The second option is what I set for daily usage, that way I can keep load Vcore as low as possible and have idle stability, I also have lower idle temps and power consumption.