My problem is the movement. It skips every few steps.

I've tried the patch, the shadow fix, updating and rollback of video drivers, the clamp and ipref changes, the downloaded *.dll from that New Vegas website, and etc.

Nothing I've found so far fixes it. The game otherwise, runs smoothly and quickly, even at high settings - it's just the movement makes the game very difficult to play.

The following is from DxDiag:

------------------
System Information
------------------
Time of this report: 10/23/2010, 13:09:26
Machine name: MARC-B0C2225142
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.100216-1514)
Language: English (Regional Setting: English)
System Manufacturer: Dell Inc.
System Model: Precision WorkStation 380
BIOS: Phoenix ROM BIOS PLUS Version 1.10 A07
Processor: Intel® Pentium® D CPU 3.00GHz (2 CPUs)
Memory: 2046MB RAM
Page File: 871MB used, 3066MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.5512 32bit Unicode

------------
DxDiag Notes
------------
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.

--------------------
DirectX Debug Levels
--------------------
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)

---------------
Display Devices
---------------
Card name: NVIDIA GeForce 8400 GS
Manufacturer: NVIDIA
Chip type: GeForce 8400 GS
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0404&SUBSYS_C7383842&REV_A1
Display Memory: 512.0 MB
Current Mode: 1024 x 768 (32 bit) (85Hz)
Monitor: Plug and Play Monitor
Monitor Max Res: 1600,1200
Driver Name: nv4_disp.dll
Driver Version: 6.14.0011.8618 (English)
DDI Version: 9 (or higher)
Driver Attributes: Final Retail
Driver Date/Size: 6/10/2009 06:03:00, 5908608 bytes
WHQL Logo'd: Yes
WHQL Date Stamp: n/a
VDD: n/a
Mini VDD: nv4_mini.sys
Mini VDD Date: 6/10/2009 06:03:00, 8087712 bytes
Device Identifier: {D7B71E3E-4744-11CF-587A-33E700C2CB35}
Vendor ID: 0x10DE
Device ID: 0x0404
SubSys ID: 0xC7383842
Revision ID: 0x00A1
Revision ID: 0x00A1
Video Accel: ModeMPEG2_C ModeMPEG2_D
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_BOBVerticalStretch
{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_BOBVerticalStretch
{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_BOBVerticalStretch
{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_BOBVerticalStretch
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
-------------
Description: SigmaTel Audio
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_8384&DEV_7690&SUBSYS_102801A8&REV_1022
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: sthda.sys
Driver Version: 5.10.4823.0000 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 11/16/2005 16:36:00, 1047816 bytes
Other Files:
Driver Provider: SigmaTel
HW Accel Level: Full
Cap Flags: 0xB5B
Min/Max Sample Rate: 44100, 44100
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX™ 2.0 Listen/Src: No, No
I3DL2™ Listen/Src: No, No
Sensaura™ ZoomFX™: No
Registry: OK
Sound Test Result: Not run

---------------------
Sound Capture Devices
---------------------
Description: SigmaTel Audio
Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: sthda.sys
Driver Version: 5.10.4823.0000 (English)
Driver Attributes: Final Retail
Date and Size: 11/16/2005 16:36:00, 1047816 bytes
Cap Flags: 0x41
Format Flags: 0xCC0

-----------
DirectMusic
-----------
DLS Path: C:\WINDOWS\SYSTEM32\drivers\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: Dell USB Keyboard
Attached: 1
Controller ID: 0x0
Vendor/Product ID: 0x413C, 0x2010
FF Driver: n/a

Device Name: Dell USB Keyboard
Attached: 1
Controller ID: 0x0
Vendor/Product ID: 0x413C, 0x2010
FF Driver: n/a

Device Name: Dell USB Keyboard
Attached: 1
Controller ID: 0x0
Vendor/Product ID: 0x413C, 0x2010
FF Driver: n/a

Poll w/ Interrupt: No
Registry: OK

There's a download at Fallout NV Nexus
Go here:

http://www.newvegasnexus.com/downloads/file.php?id=34778

then download the file.

Take the file and place it in your Fallout New Vegas folder.

Go into the launcher, and if the launcher resets your video settings, you will know it worked. You should now get about 50 - 80% better performance/less choppiness.

Yes, I've tried that *.dll file from the New Vegas. Maybe it's better, but not by a noticable amount that I can see.

if you trust a random stranger who tell you to put files on your cpu and is soo helpfull to offer you the link to the file......

Do i really need to say anything........

Dont put up for this duct tape and balin wire fixes these people are offering.

You invite virus and worse.

Hold this game maker accountable for charging you full price for an mod of a game engine that shouldent have these kind of problems.

Tell them this kind of treatment of fans and gamers is wrong!

Tell them to offer a quality product.