Cliaban Rilag Ruins game issue

[hero1900]

whenever i get in the ruins from the two gates the game will become so slow and i cannot point my party to move any where. and the screen is full of pink color. i am stuck here i cannot get further in the game because of this. tested on 1.3 and 1.4 steam beta

 

Processor Information:

    Vendor:  GenuineIntel

    CPU Family:  0x6

    CPU Model:  0x3a

    CPU Stepping:  0x9

    CPU Type:  0x0

    Speed:  2401 Mhz

    8 logical processors

    4 physical processors

    HyperThreading:  Supported

    FCMOV:  Supported

    SSE2:  Supported

    SSE3:  Supported

    SSSE3:  Supported

    SSE4a:  Unsupported

    SSE41:  Supported

    SSE42:  Supported

    

Network Information:

    Network Speed:  

    

Operating System Version:

    Ubuntu 14.04.2 LTS (64 bit)

    Kernel Name:  Linux

    Kernel Version:  3.13.0-49-generic

    X Server Vendor:  The X.Org Foundation

    X Server Release:  11501000

    X Window Manager:  Compiz

    Steam Runtime Version:  steam-runtime-release_2015-01-06

    

Video Card:

    Driver:  NVIDIA Corporation GeForce GT 750M/PCIe/SSE2

 

    Driver Version:  4.4.0 NVIDIA 331.113

    OpenGL Version: 4.4

    Desktop Color Depth: 24 bits per pixel

    Monitor Refresh Rate: 59 Hz

    VendorID:  0x10de

    DeviceID:  0xfe4

    Number of Monitors:  1

    Number of Logical Video Cards:  1

    Primary Display Resolution:  1366 x 768

    Desktop Resolution: 1366 x 768

    Primary Display Size: 12.17" x 6.85"  (13.94" diag)

                                            30.9cm x 17.4cm  (35.4cm diag)

    Primary Bus: PCI Express 16x

    Primary VRAM: 2048 MB

    Supported MSAA Modes:  2x 4x 8x 16x 

    

Sound card:

    Audio device: Realtek ALC269VC

    

Memory:

    RAM:  11967 Mb