Resume from Sleep drops Overclock

Hello,

I am having some issues with Windows and resuming from sleep.
I have an overclock of 4.2 GHz and everything works great, but after I resume windows from sleep, the clock drops to normal Turbo Boost Ratios ranging from 3.4 to 3.8. Naturally after a restart the clock goes back to 4.2 as if nothing ever happened. Any ideas as to what this might be? Thanks for any input.

Note: I have tried Disabling various power functions in the BIOS such as EIST, C1E, etc.


Specs:

Gigabye Z77X-UD5H
i7-2600K @ 4.2GHz
G.SKILL Ripjaws DDR3 2133 16GB
Sapphire 6950 2gb Dirt 3 Edition
Creative X-Fi Titanium
Crucial m4 128GB Rev.000F
600 GB Velociraptor
3 x Other Storage HDDs
Thermaltake Toughpower 850W