When I OC my CPU to 4.2 GHz, the first 2 cores, 0 and 1, go to 4200MHz, but my last two, 2 and 3, like to stay at 1800MHz. This only happens when stressing with AIDA64. Its not thermal because my thermal margin still has 45C on it. Also, while idle, cores will jump from 1800 to 4200 randomly...