I am having the same problem.
Have set all 3 video setting the same. Have no other apps or antivirus running while playing.
DXDIAG:
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System Information
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Time of this report: 8/18/2009, 16:52:04
Machine name: HOME-EB0AE14363
Operating System: Windows XP Professional x64 Edition (5.2, Build 3790) Service Pack 2 (3790.srv03_sp2_gdr.090319-1204)
Language: English (Regional Setting: English)
System Manufacturer: To Be Filled By O.E.M.
System Model: To Be Filled By O.E.M.
BIOS: Default System BIOS
Processor: Intel(R) Pentium(R) D CPU 3.20GHz (2 CPUs), ~3.2GHz
Memory: 3264MB RAM
Page File: 444MB used, 4666MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.3790.3959 32bit Unicode
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DxDiag Notes
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DirectX Files Tab: No problems found.
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Music Tab: No problems found.
Input Tab: No problems found.
Network Tab: No problems found.
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DirectX Debug Levels
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Direct3D: 0/4 (n/a)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (n/a)
DirectMusic: 0/5 (n/a)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)
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Display Devices
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Card name: NVIDIA GeForce 9400 GT
Manufacturer: NVIDIA
Chip type: GeForce 9400 GT
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0641&SUBSYS_00000000&REV_A1
Display Memory: 1024.0 MB
Current Mode: 1280 x 960 (32 bit) (70Hz)
Monitor: Plug and Play Monitor
Monitor Max Res: 1600,1200
Driver Name: nv4_disp.dll
Driver Version: 6.14.0011.8048 (English)
DDI Version: 9 (or higher)
Driver Attributes: Final Retail
Driver Date/Size: 11/12/2008 14:54:00, 8914560 bytes
WHQL Logo'd: n/a
WHQL Date Stamp: n/a
VDD: n/a
Mini VDD: nv4_mini.sys
Mini VDD Date: 11/12/2008 14:54:00, 8149504 bytes
Device Identifier: {D7B71E3E-4501-11CF-C07C-0B2000C2CB35}
Vendor ID: 0x10DE
Device ID: 0x0641
SubSys ID: 0x00000000
Revision ID: 0x00A1
Revision ID: 0x00A1
Video Accel: ModeMPEG2_C ModeMPEG2_D ModeWMV9_B ModeWMV9_A
Deinterlace Caps: {6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt retch
{6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt retch
{6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(YV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt retch
{6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt retch
Registry: OK
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled
DDraw Test Result: Not run
D3D7 Test Result: Not run
D3D8 Test Result: Not run
D3D9 Test Result: Not run
-------------
Sound Devices
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Description: Realtek HD Audio output
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0662&SUBSYS_18493662&REV_1001
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: RTKHDA64.SYS
Driver Version: 5.10.0000.5519 (English)
Driver Attributes: Final Retail
WHQL Logo'd: n/a
Date and Size: 11/27/2007 07:07:00, 4632064 bytes
Other Files:
Driver Provider: Realtek Semiconductor Corp.
HW Accel Level: Full
Cap Flags: 0x0
Min/Max Sample Rate: 0, 0
Static/Strm HW Mix Bufs: 0, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: Yes, Yes
I3DL2(tm) Listen/Src: Yes, Yes
Sensaura(tm) ZoomFX(tm): No
Registry: OK
Sound Test Result: Not run
---------------------
Sound Capture Devices
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Description: Realtek HD Audio Input
Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: RTKHDA64.SYS
Driver Version: 5.10.0000.5519 (English)
Driver Attributes: Final Retail
Date and Size: 11/27/2007 07:07:00, 4632064 bytes
Cap Flags: 0x0
Format Flags: 0x0
-----------
DirectMusic
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DLS Path: C:\WINDOWS\SYSTEM32\drivers\etc\GM.DLS
DLS Version: 1.00.0016.0002
Acceleration: n/a
Ports: Microsoft Synthesizer, Software (Not Kernel Mode), Output, DLS, Internal, Default Port
Microsoft MIDI Mapper [Emulated], Hardware (Not Kernel Mode), Output, No DLS, Internal
Microsoft GS Wavetable SW Synth [Emulated], Hardware (Not Kernel Mode), Output, No DLS, Internal
Registry: OK
Test Result: Not run
-------------------
DirectInput Devices
-------------------
Device Name: Mouse
Attached: 1
Controller ID: n/a
Vendor/Product ID: n/a
FF Driver: n/a
Device Name: Keyboard
Attached: 1
Controller ID: n/a
Vendor/Product ID: n/a
FF Driver: n/a
Device Name: Saitek X52 Flight Controller
Attached: 1
Controller ID: 0x0
Vendor/Product ID: 0x06A3, 0x075C
FF Driver: n/a
Poll w/ Interrupt: No
Registry: OK
-----------
USB Devices
-----------
+ USB Root Hub
| Vendor/Product ID: 0x8086, 0x27CB
| Matching Device ID: usb\root_hub
| Service: usbhub
----------------
Gameport Devices
----------------
------------
PS/2 Devices
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+ Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
| Matching Device ID: *pnp0303
| Service: i8042prt
|
+ HID Keyboard Device
| Matching Device ID: hid_device_system_keyboard
| Service: kbdhid
|
+ Terminal Server Keyboard Driver
| Matching Device ID: root\rdp_kbd
| Upper Filters: kbdclass
| Service: TermDD
|
+ Microsoft PS/2 Mouse
| Matching Device ID: *pnp0f03
| Service: i8042prt
|
+ HID-compliant mouse
| Matching Device ID: hid_device_system_mouse
| Service: mouhid
|
+ Terminal Server Mouse Driver
| Matching Device ID: root\rdp_mou
| Upper Filters: mouclass
| Service: TermDD