Vdroop + OC

[UtopiA]

I'll make this short and sweet:

"Loadline Calibration" Disabled (Enabled VDroop)
Bios VCore = 1.237v
CPUZ Vcore = 1.192v
CPUZ Vcore Under LOAD = 1.152v
Prime95 stable 24 hours.

"Loadline Calibration" Enabled (Removes VDroop)
Bios VCore = 1.168v
CPUZ Vcore = 1.152v
CPUZ Vcore Under LOAD = 1.152v
Prime95 fails ~10 minutes.

Bios VCore = 1.192v
CPUZ Vcore = 1.172v
CPUZ Vcore Under LOAD = 1.172v
Prime95 fails ~2 hours.

I know CPUZ doesn't reflect "actual" vcore.
But if it shows 1.152v in BOTH cases, shouldn't my system have the same stability? Even at 1.172v it should definitely be stable, right?!
Only thing I can think of, vdroop still taking a little off my vcore under load but CPUZ isn't showing it?

Looks like the extra vdroop allows lower load vcore to be stable, but if I disable vdroop it requires higher vcore to be stable...

[edit]
Alright Small FFT test is stable.
Prime95 fails everytime at FFT Length 869K while using memory. I've tried volts from 1.8 to 2.1 all with different timings, always fails at 896K.
This is only with Loadline Calibration enabled.