Don't know, I can't get it to boot back into the installer!

I would check you dimm slots to find the bad one and remove the ram from it for now IF that is truly the issue. Put 1 stick into dimm 2, run memtest for 30min-1hr and keep doing it until something fails. If nothing fails try a different Power supply with everything hooked up. If same problems occur its likely safe to assume its motherboard. I am wondering if something weird happened with the bios update of the motherboard as well... Maybe redo it or use a one version back to see if anything changes. That would be what my testing focus would be with this issue.

KEVRAY, we have the same motherboard, yeah?

I have the same mobo as you but 1080s have not shipped yet.

Here are my tomb raider results from a few months ago...
 
http://forums.evga.com/Si...and-dx12-m2461406.aspx

Okay, so after quite a bit of work....................... everything appears to be fixed! (Well, not everything)
 
After the Windows reinstall, I still did some fiddling around. Reset my motherboard to default, and removed the overclock. After all that I ran quite a few tests with settings and was getting framerates that I've seen in reviews and other benchmarks. There definitely still seems to be an issue with the motherboard however, as I am getting some random system freezea so I still plan on replacing that soon. I will also upgrade RAM, at the same time. 
 
Thank you to everyone who continued to help out and was patient with me. I'll try to post some benchmarks and average FPS in games.

Well lol motherboard is still an issue, but we can safely rule out that it is not the GPU! I will run those scores and post them up!
 

Is the freeze only ingame or out of game also?

So the problem with tomb raider was that you had your settings too high?

Hmm. So what was keeping your framerate at 32?

mintyfruits
I have no idea. :/ The same was with Hitman. On Overwatch I am getting 145+ on epic. I have no idea what happened.

No problem. Glad the windows re-install fixed it. 

atfrico
Good to know the windows reinstall fixed the problem. So apparently the DDU software doesnt work 100% or any of the cleaning guides, it is a 50/50 chance.

DDU does work. We don't know exactly what was causing the OP's problem. A windows re-install did fix the problem though. Was it because of a corrupt registry? No idea.

Yeah, I mean this was truly a pain in the A! But really, thank you all for your diligent help. 

VeRsUaLHi KEVRAY, The reason SSAAx4 takes so big of a hit they say it's like rendering 4k.

Yeah SSAA x4 and maximum game settings in some games takes too much of a performance hit for the GTX 1080 FE.
 

turn off SSAAx4 off in Rise of the Tomb Raider and go to nvidia control panel ->turn on dsr then use 4k resolution in dsr instead. dsr  at 4k looks way better than ssaax4.

Tried it in the past and was not convinced it improves image quality that much, the performance hit was not worth it for me, plus, on my 24 inch monitor certain user interfaces in games are way too tiny, even to read, and on top of that I sit several feet away from my monitor when gaming. In my ideal gaming world yeah I would go for at least a large 40 inch screen with an optimum resolution of 3840x2160 @100Hz or more and maybe even gsync? problem with that is I would need a multi-GPU setup if I wanted maximum settings for maximum image quality in pc games, just not going to happen anytime soon, way too expensive. 3 to 5 years from now maybe there will be one GPU that can handle it at 60+ fps?
 

Here is a video comparing SSAAx4 and dsr
https://www.youtube.com/watch?v=GWzygsGyDaU

This is only beneficial if you sit very close to your gaming monitor.tv, for me it's a waste of time, the further I sit from my screen the smoother the image becomes anyway, that's how the eye system works, the human eye has a finite resolution.

for RoTTR an Hitman try running them in DX12, I've read reviews where DX12 yields better results.