PC performing poorly - GTX 750 Ti - ideas?

I have a decent PC. Not the greatest by any measure, but I'm running graphics on low at 1366x768 and lower just to play and I still only get about 15 FPS during fights. On the opening menu screen I get a steady 14 FPS. I'm convinced something is wrong, but I can't figure it out... Any ideas on what could be wrong?

My PC:

windows 7 x64

Intel i7 930 @ 2.80 GHz

Geforce GTX 750 Ti (4GB)

6 gigs RAM

Direct3D 11

I've tried tons of different video options and tons of different resolutions.

I upgraded my nvidia drivers and tried their optimizer (it set the settings WAY higher and it ran horribly).

I messed around with a bunch of user.cfg settings, with no luck.

I disabled my other monitors because I foolishly thought my other monitors might somehow be interfering.

No matter what I get around 15-25 FPS, usually lower if I'm doing anything.

I'm playing the game but it would really be a lot more fun if I could get it to run smoother.

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System Information
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Time of this report: 12/1/2014, 21:38:35
       Machine name: xxxxxxxx-PC
   Operating System: Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.140303-2144)
           Language: English (Regional Setting: English)
System Manufacturer: System manufacturer
       System Model: System Product Name
               BIOS: BIOS Date: 02/24/10 14:05:48 Ver: 08.00.15
          Processor: Intel(R) Core(TM) i7 CPU         930  @ 2.80GHz (8 CPUs), ~2.8GHz
             Memory: 6144MB RAM
Available OS Memory: 6136MB RAM
          Page File: 3936MB used, 8331MB available
        Windows Dir: C:\Windows
    DirectX Version: DirectX 11
DX Setup Parameters: Not found
   User DPI Setting: Using System DPI
 System DPI Setting: 96 DPI (100 percent)
    DWM DPI Scaling: Disabled
     DxDiag Version: 6.01.7601.17514 64bit Unicode

------------
DxDiag Notes
------------
      Display Tab 1: No problems found.
      Display Tab 2: No problems found.
      Display Tab 3: No problems found.
        Sound Tab 1: No problems found.
        Sound Tab 2: No problems found.
        Sound Tab 3: 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 750 Ti
       Manufacturer: NVIDIA
          Chip type: GeForce GTX 750 Ti
           DAC type: Integrated RAMDAC
         Device Key: Enum\PCI\VEN_10DE&DEV_1380&SUBSYS_362D1458&REV_A2
     Display Memory: 4022 MB
   Dedicated Memory: 1974 MB
      Shared Memory: 2048 MB
       Current Mode: 2560 x 1440 (32 bit) (59Hz)
       Monitor Name: Dell U2713HM (Digital)
      Monitor Model: DELL U2713HM
         Monitor Id: DEL407E
        Native Mode: 2560 x 1440(p) (59.951Hz)
        Output Type: DVI
        Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver File Version: 9.18.0013.4475 (English)
     Driver Version: 9.18.13.4475
        DDI Version: 11
       Driver Model: WDDM 1.1
  Driver Attributes: Final Retail
   Driver Date/Size: 11/12/2014 16:20:36, 19966344 bytes
        WHQL Logo'd: n/a
    WHQL Date Stamp: n/a
  Device Identifier: {D7B71E3E-50C0-11CF-9366-20161FC2C435}
          Vendor ID: 0x10DE
          Device ID: 0x1380
          SubSys ID: 0x362D1458
        Revision ID: 0x00A2
 Driver Strong Name: oem22.inf:NVIDIA_SetA_Devices.NTamd64.6.1:Section139:9.18.13.4475😛ci\ven_10de&dev_1380
     Rank Of Driver: 00E02001