I built my PC (specs below) about 3 months ago and it has been running like a dream. However, last week I bought a 4K monitor and plugged it in. It wasn't able to run some games in 4K such as world of warcraft at an acceptable frame rate at ultra settings. So I tried to overclock the GPU and incrementally increased the core/memory clock until they were at +200. At this point the frames were actually less than before so I reverted it back to the original clock speed but the frames stayed lower and loading times were vastly longer. I quit the game and noticed the general speed was a lot slower such as opening programs and start up time has definitely increased. I'm not sure what component is causing this issue as I've tried to move a game on to a ram disk and although loading times were much faster, the frames were still not as high as before. Have I damaged the GPU or some other component?
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System Information
------------------
Time of this report: 7/27/2016, 19:56:49
Machine name: DESKTOP-3DABP5I
Operating System: Windows 10 Pro 64-bit (10.0, Build 10586) (10586.th2_release_sec.160630-1736)
Language: English (Regional Setting: English)
System Manufacturer: MSI
System Model: MS-7978
BIOS: B.60
Processor: Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz (8 CPUs), ~4.0GHz
Memory: 16384MB RAM
Available OS Memory: 16330MB RAM
Page File: 4105MB used, 15327MB available
Windows Dir: C:\Windows
DirectX Version: 12
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
Miracast: Available, with HDCP
Microsoft Graphics Hybrid: Not Supported
DxDiag Version: 10.00.10586.0000 64bit Unicode
------------
DxDiag Notes
------------
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Sound Tab 3: No problems found.
Sound Tab 4: No problems found.
Input Tab: No problems found.
--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)
---------------
Display Devices
---------------
Card name: NVIDIA GeForce GTX 960
Manufacturer: NVIDIA
Chip type: GeForce GTX 960
DAC type: Integrated RAMDAC
Device Type: Full Device
Device Key: Enum\PCI\VEN_10DE&DEV_1401&SUBSYS_32021462&REV_A1
Display Memory: 10181 MB
Dedicated Memory: 2016 MB
Shared Memory: 8165 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)
Monitor Name: AOC 2879
Monitor Model: U2879G6
Monitor Id: AOC2879
Native Mode: 3840 x 2160(p) (59.997Hz)
Output Type: Displayport External
Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um,nvwgf2um
Driver File Version: 10.18.0013.6881 (English)
Driver Version: 10.18.13.6881
DDI Version: 12
Feature Levels: 12.1,12.0,11.1,11.0,10.1,10.0,9.3,9.2,9.1
Driver Model: WDDM 2.0
Graphics Preemption: DMA
Compute Preemption: DMA
Miracast: Not Supported
Hybrid Graphics GPU: Not Supported
Power P-states: Not Supported
Driver Attributes: Final Retail
Driver Date/Size: 10/07/2016 00:00:00, 17463992 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B71E3E-5741-11CF-336D-0F121CC2C735}
Vendor ID: 0x10DE
Device ID: 0x1401
SubSys ID: 0x32021462
Revision ID: 0x00A1
Driver Strong Name: oem70.inf:0f066de3d2368449:Section045:10.18.13.6881ci\ven_10de&dev_1401
Rank Of Driver: 00D12001
------------------
System Information
------------------
Time of this report: 7/27/2016, 19:56:49
Machine name: DESKTOP-3DABP5I
Operating System: Windows 10 Pro 64-bit (10.0, Build 10586) (10586.th2_release_sec.160630-1736)
Language: English (Regional Setting: English)
System Manufacturer: MSI
System Model: MS-7978
BIOS: B.60
Processor: Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz (8 CPUs), ~4.0GHz
Memory: 16384MB RAM
Available OS Memory: 16330MB RAM
Page File: 4105MB used, 15327MB available
Windows Dir: C:\Windows
DirectX Version: 12
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
Miracast: Available, with HDCP
Microsoft Graphics Hybrid: Not Supported
DxDiag Version: 10.00.10586.0000 64bit Unicode
------------
DxDiag Notes
------------
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Sound Tab 3: No problems found.
Sound Tab 4: No problems found.
Input Tab: No problems found.
--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)
---------------
Display Devices
---------------
Card name: NVIDIA GeForce GTX 960
Manufacturer: NVIDIA
Chip type: GeForce GTX 960
DAC type: Integrated RAMDAC
Device Type: Full Device
Device Key: Enum\PCI\VEN_10DE&DEV_1401&SUBSYS_32021462&REV_A1
Display Memory: 10181 MB
Dedicated Memory: 2016 MB
Shared Memory: 8165 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)
Monitor Name: AOC 2879
Monitor Model: U2879G6
Monitor Id: AOC2879
Native Mode: 3840 x 2160(p) (59.997Hz)
Output Type: Displayport External
Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um,nvwgf2um
Driver File Version: 10.18.0013.6881 (English)
Driver Version: 10.18.13.6881
DDI Version: 12
Feature Levels: 12.1,12.0,11.1,11.0,10.1,10.0,9.3,9.2,9.1
Driver Model: WDDM 2.0
Graphics Preemption: DMA
Compute Preemption: DMA
Miracast: Not Supported
Hybrid Graphics GPU: Not Supported
Power P-states: Not Supported
Driver Attributes: Final Retail
Driver Date/Size: 10/07/2016 00:00:00, 17463992 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B71E3E-5741-11CF-336D-0F121CC2C735}
Vendor ID: 0x10DE
Device ID: 0x1401
SubSys ID: 0x32021462
Revision ID: 0x00A1
Driver Strong Name: oem70.inf:0f066de3d2368449:Section045:10.18.13.6881ci\ven_10de&dev_1401
Rank Of Driver: 00D12001