Vcore normally fluctuates either from Vdroop or from power saving functions. There is nothing wrong with that. You don't need to disable power saving functions either. Those are good, they will extend the life of your hardware and reduce your power consumption.
Offset mode may be called DVID on that board I think. If you have adjustable DVID it may be + or - .05V increment. Try putting -.05 into that and see if the voltage in windows at full load goes down by ~.05V.
You can probably get by with 4.5 ghz, 1.25V at full load and all power saving functions left on. That should be something to aim for. You may need more like 1.3v which is fine as well. I also think you don't need to disable turbo just leave that all on auto and just change the multi to 45x.
Thanks, I will disable turbo. but, unfortunately I couldn't find DVID - I searched my BIOS extensively and for the life of me I cannot find the option to eliminate vdroop.
Would the LLC setting be useful?