Poor Performance and driver failing on 970

Over the last couple of weeks my GPU has been performing way below what it should(like 10ish fps on a game I used to run at over 200). I am also getting spikes where everything goes slow, audio messes up sounding staticy and slowed down,, lasts for about 10 -60 seconds sometimes resulting with a message that my driver failed but recovered it happens even when doing nothing high performance like watching YouTube videos with no other programs open. Also my start up seems to be slowed down a lot, it used to take about 5 seconds now it takes about 30. Also no BSoD yet. Also card has not been overclocked at all.

Here is a list of what I have tried:
-clean install of old drivers(tried 3 different ones[352.86/350.12/347.88])
-Turned Link state power management off in advanced power settings
-hardware acceleration off in chrome
-did a system restore to before the problem began
-clean start up

when I was in safe mode and when i had the driver uninstalled I noticed no problems although it is hard to tell like that so I could be wrong.

I read that perhaps it is a voltage problem (P00 power state)that can be fixed by changing the bios with a bios tweaker but I have no idea how to do that.

files that showed up on the driver failed and recovered message
WD-20150603-0523.dmp
Sysdata.xml
WerInternalMetadata.Xml

Try loading defaults in BIOS.

Also:

Graphic Card Driver Clean Installation (Belongs to MistUnleashed):
1.Run the Guru3D Display Driver Removal Tool: Display Driver Uninstaller Download version 15.3.0.0 Display Driver Uninstaller Download version 15.3.0.2
2.Download CCleaner here (CCleaner - Download) and run both the Cleaner and the Registry Cleaner to remove left-over keys.
3.Go into C:\Program Files & C:\Program Files (x86) & C:\ProgramData and delete any leftover Nvidia files.
4.Disable automatic driver installation: https://support.microsoft.com/en-us/kb/2500967
5.Restart Computer.
6.After restart go to: Drivers - Download NVIDIA Drivers and install the latest Nvidia Package (Including the 3D Vision Drivers - Install it all). Drivers - Download NVIDIA Drivers
7.Re-enable the automatic driver installation: https://support.microsoft.com/en-us/kb/2500967
8.Run CCleaner again (as instructed in Step 2).
9.Restart Computer.

that seemed to help alot but I am still getting the performance spikes that mess. Also I know it is not an issue with heat, dust or virus's.

It was better for about a day now it's back to just as bad as before, also I got a bsod on startup today.

The problem seems to have gotten worse I had one of the spikes that lasted over 30 mins, intell I restarted. Also it seems to be messing with my monitor the logo for my monitor and its menus have a corrupted look to them as in its all white squares and unreadable text.

Are you monitoring temps by the way? Get HWInfo and check the temps for both GPU and CPU.

I am monitoring temps and they seem good, I'm at about 35ish for everything other than GPU which is about 45ish. Also how do I load defaults in bios?