More likely to drop out at 5V as well.
I can't confirm this.
btw there is another pool working with the BE Controller
btcmp.com
rr.btcmp.com:3333
I'm not saying it will drop out, but if people buy cheaper 5V PSUs then it is much more likely to drop out compared to 12V as you're much closer to the minimum vreg input. Pool is too small for me to list.