Exactly that's what's annoying about this chip, tried every PLL voltage from 1.3v-2.1v, from 1.5v upwards it was the same cold bug, 1.4 and 1.3v were a little lower. It's really annoying but I'm going to give it a go in my Rex BE when I get that fixed, will see if anything changes in there but I'm not holding my breath. Had same results in regular rex 3 as I did in the OC.