Its correct. Under load, vcore drops in voltage. LLC was created to make up for the drop by increasing the vcore voltage under load. By putting it on highest setting, llc is putting in more voltage and therefore increasing the vcore. By turning it off, you're seeing the drop. Typically you want to set llc so that vcore either stays the same or drops a little bit. There should be levels 1-10 in your bios, right? Try to find the right level so that vcore stays the same or drops a little bit. I set vcore to 1.180 @ level 4 and it drops 0.006 to 1.174, my optimal setting.