I'm having a heck of a time trying to get a good overclock out of my skylake and I figured I'd ask for some advice from the community.

My system:
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i7 6700k
Z170 Asus Pro Gaming (Bios 803)
Corsair Vengeance LPX DDR4-3200 (16-18-18-36 / 1.35v)
Single Gigabyte Windforce Nvidia 980
Cooler Master Hyper 212 EVO
x4 200mm case fans (2 intake, 2 output)
Termaltake 750w PS

Using Real Bench, Real Temp, CPU-Z and HWiNfo64 to watch things.

Nothing amazing hardware wise but seems like I should be able to get a better overclock out of it than what I'm getting.

I'm able to get 4600 @ 46x100/1.354v (adaptive and manual) with temps hitting 82-84C using a Real Bench 15 min stress test. I also have the memory running at 3200 rather than the 2133 defaults. Fans are all capped out over 75C

I can't get anything stable past 4600 no matter what I do. I've tried the following settings which all result in crashes or just not booting:

4600 @ 46x100/1.30v (crashes)
4600 @ 46x100/1.33v (crashes)
4600 @ 23x200/1.35v (won't even boot)
4700 @ 47x100/1.42v (crashes as soon as I start test)

I feel like this is a) running to hot and b) requires to much voltage. Am I off base or is this similar to others experiences? Am I expecting to much for this set of hardware?

Thanks.