I had recently submitted a problem with my video card to EVGA. I was given a long list of possible fixes that I didn't have the time to try. I took the computer to TigerDirect and had them take a look at it. They tested all of my hardware components and said that everything is operating correctly. They even had a technician take the whole computer apart and rebuild it to make sure it wasn't an issue with the assembly. Now I just got the computer home after spending more money with them, Only to find that the computer is now back to operating at a mere 29FPS. Now they (TigerDirect) Claim that all of my hardware is operating up to spec. They also claim that this appears to be an issue with the drivers. They rolled me back to a driver that would work, But to no avail. Someone please help me figure out why this is not getting me the results that I got immediately after building the computer. The OS has been reinstalled and I've tried different drivers.
 
Processor: Intel Core i5-4670K @ 3.4GHz
RAM: 16GB Corsair Vengeance
OS: Windows 7 Home Premium
Mobo: ASUS Z97-AR
Current Driver Version: 337.88 (Last driver that would operate the card correctly per TigerDirect. Still not working.)
PSU: ULTRA HS (Hybrid Series) 750 (80 Plus Bronze)
Plenty of space available on my HD (3TB HD Brand new, Nothing but the OS, Video card, And benchmark software)

It's at 1680x1050 59hz. And to clarify, upon building the computer it immediately saw FPS's at 80+ Even in ultra settings for a couple days, now won't go over 32-33.

I'm using Valley Benchmark, And in the darker benchmarks the FPS is as low as 19fps. In the lighter in color benchmarks (With much more sky in the picture) is when it gets to just above 30. The tech from TD said he is still researching to see what Driver will give me optimal performance, But I have a friend with the same card and using the newest drivers with no issue. I had no overclocking software when I ran these benchmarks, and I haven't messed with any of the overclocking options for the processor or the video card. When I continue checking the usage on my computer, It's rarely over 1% usage for CPU and 11% for physical memory. At idle EVGA Precision has the clock at 135MHz and the voltage at 861MV. Not sure if this helps but I'm trying to give as much info as possible. I'm not the best with this troubleshooting stuff.

You want the whole thing posted here? Won't let me attach the text file, So I would have to copy and paste the whole thing, I think?

 
 
docs.google    .com/document/d/1cxY5uDsQ8GKc7rNDS_fDA7skGQnzwrN3dEeHmYMkPIM/pub
 
There it is

docs.google    .com/document/d/1cxY5uDsQ8GKc7rNDS_fDA7skGQnzwrN3dEeHmYMkPIM/edit?usp=sharing
 
Changed the viewing permissions
 
 
I have to call it a night, I'll check back in the AM. Thanks.

Have you tried using the GPU in some other system to be almost 100% sure the problem is with the GPU and not some other component or some other component and the GPU? 
What driver were you using when this happened? The 340.43 beta driver killed my 660Ti and the 340.52 driver was buggy with "bad pool header" BSODs after two weeks of use on my 760FTW, i have since gone back to the 337.88 driver with no problems.
 
Tinfoil hat theory inbound:-
I am beginning to believe that Kepler compatibility is been over looked or not assured.

This is what I have from GPU-Z at this point.

I agree with what Brimy posted.  You said your friend has the exact same card that is working fine. 
 
Unless there is some warranty issue if you open up the case...
 
I dealt with pc issues without another system to test and spent hours doing online research to find the problem.  I was quite sure i had found the problem component because the symptons i saw relate to the issues i read about and it was all very similar.  I was ready to buy a part and my brother happened to be around at that time.  I used his system to test and that part was perfectly fine.  It was something else causing the issue and stopped me from buying a $150+ part that would have been useless to me.
 
Best way to troubleshoot it,  though i understand that not everyone will have friends nearby or convenient to try it.

WKLAU
I agree with what Brimy posted.  You said your friend has the exact same card that is working fine. 
 
Unless there is some warranty issue if you open up the case...
 
I dealt with pc issues without another system to test and spent hours doing online research to find the problem.  I was quite sure i had found the problem component because the symptons i saw relate to the issues i read about and it was all very similar.  I was ready to buy a part and my brother happened to be around at that time.  I used his system to test and that part was perfectly fine.  It was something else causing the issue and stopped me from buying a $150+ part that would have been useless to me.
 
Best way to troubleshoot it,  though i understand that not everyone will have friends nearby or convenient to try it.

I can't count the times that has helped me with a customer's build and my own.

It is a render test so the GPU would be a 99% and dip if the test changes or stops. I think you should RMA the GPU to EVGA if you really think the GPU is at fault and i am sure EVGA will accommodate you but if/when you get the new GPU and the problem still exists, what then? I mean EVGA once willing, will only RMA the GPU and if some other component is the problem then you will still have the same problem.
 
This is a tricky one to solve as i am not sure what Tiggerdirect is willing to do for you, as in testing the GPU in another system to see if you get the normal fps, then you would know it is another component that is causing the problem.

Hello sir,
I had experienced a similar issue, to cut to the chase try changing your motherboard's PCIe 16X slot down to 2.0 from 3.0 in the bios - this fixed my issue and since the gtx 770 will not saturate the bus I consider this a fix.
I encourage you to test this option.