Total War: Warhammer: Warhammer tarda mucho en cargar la partida

Hola!! muy buenas!

Desde que tengo este juego me tarda bastante en cargar las partidas, pero lo curioso es que solo la primera vez. Me explico, entro en la campaña carga leeento, una vez que ha cargado, salgo del juego, luego vuelvo a entrar y carga super rápido, pero si reinicio, otra vez lo mismo. la primera vez que carga super lento....
He mirado en internet posibles soluciones pero no encuentro nada. A alguién le ha pasado o sabe por qué puede ser.

Aquí dejo la información de mi ordenador.

System Information
------------------
Time of this report: 2/20/2018, 14:03:11
       Machine name: JAVIRICO-PC
   Operating System: Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.130828-1532)
           Language: Spanish (Regional Setting: Spanish)
System Manufacturer: ASUS
       System Model: All Series
               BIOS: BIOS Date: 08/19/14 10:46:43 Ver: 21.03
          Processor: Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz (4 CPUs), ~3.6GHz
             Memory: 12288MB RAM
Available OS Memory: 11730MB RAM
          Page File: 1231MB used, 22226MB 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 32bit 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.
          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 Key: Enum\PCI\VEN_10DE&DEV_1401&SUBSYS_36C11458&REV_A1
     Display Memory: 4095 MB
   Dedicated Memory: 3072 MB
      Shared Memory: 1023 MB
       Current Mode: 1280 x 1024 (32 bit) (60Hz)
       Monitor Name: LG L1960TR(Analog)
      Monitor Model: L1960TR
         Monitor Id: GSM4B20
        Native Mode: 1280 x 1024(p) (60.020Hz)
        Output Type: HD15
        Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver File Version: 10.18.0013.5582 (English)
     Driver Version: 10.18.13.5582
        DDI Version: 11
       Driver Model: WDDM 1.1
  Driver Attributes: Final Retail
   Driver Date/Size: 8/25/2015 19:46:21, 15512888 bytes
        WHQL Logo'd: Yes
    WHQL Date Stamp: 
  Device Identifier: {D7B71E3E-5741-11CF-2662-CC161CC2C735}
          Vendor ID: 0x10DE
          Device ID: 0x1401
          SubSys ID: 0x36C11458
        Revision ID: 0x00A1
 Driver Strong Name: oem7.inf:NVIDIA_SetA_Devices.NTamd64.6.1:Section032:10.18.13.5582:pci\ven_10de&dev_1401