Wow, that is strange!!
Have you updated your Bios lately?
Load Line Calibration enabled should reduce the effects.
Even on my Asus board with it, it leaves .0750 VDrop, but no VDroop what so ever. (780I P5N72-T)
Here is how that works!
When you over clock, you need to make up for the extra speed and power requirements of the processor by adding VCore, we all know that!
But when your VDrop and droop are so high, it basically negates the effect we need to over clock!
if that is the case, then you would need 1.5500 to get near 1.44 loaded that you will need at 3.6 Ghz.
So with that board, and that Vdrop and droop, you get to waste .1350 volts of power that could help you over clock!
For instance, my Maximus formula, with load line calibration enabled, has a Vdrop of .0250, and No VDroop at all!
So I would need 1.4625 for about 1.44 while Loaded. That is alot less voltage than you will need, because of the board.
NVidia is always like that, I had to settle with 3.4 Ghz on my 1.3250 q6600 on a P5n-d NVidia board.
Where would you like to actually OC to?