After i got my pre order pack from play.com which didnt have any codes for my items to start with, I have played games before on Steam mainly Dawn of War 2 with out problems New Vegas was jumpy at best the game ran fine at High and Ultra settings but would randomly crash for no reason, then it seemed to even out and playing with out having to save every few moments wasnt a problem. Only now a few days ago the game seems to lag from mild to quite badly, i play Mass Effect 2 & Dragon Age Origins as well as WoW on my pc with out a single problem all set to High and above with out an issues it seems only to be New Vegas

I have used steam to make sure my drivers are uptodate and that seems to have made little diffrence what so ever. I never had problems running Fallout 3 on Windows XP but i cant seem to get it to run on 7 with out it all ways crashing.

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System Information
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Time of this report: 10/28/2010, 22:46:49
Machine name: NEIL-PC
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7600) (7600.win7_gdr.100618-1621)
Language: English (Regional Setting: English)
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: H55M-UD2H
BIOS: Award Modular BIOS v6.00PG
Processor: Intel® Core™ i3 CPU 530 @ 2.93GHz (4 CPUs), ~4.2GHz
Memory: 4096MB RAM
Available OS Memory: 3960MB RAM
Page File: 3191MB used, 4725MB 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: 6.01.7600.16385 32bit Unicode

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Display Devices
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Card name: ATI Radeon HD 5800 Series
Manufacturer: ATI Technologies Inc.
Chip type: ATI display adapter (0x6899)
DAC type: Internal DAC(400MHz)
Device Key: Enum\PCI\VEN_1002&DEV_6899&SUBSYS_29721682&REV_00
Display Memory: 2738 MB
Dedicated Memory: 1014 MB
Shared Memory: 1723 MB
Current Mode: 1440 x 900 (32 bit) (60Hz)
Monitor Name: Generic Non-PnP Monitor
Monitor Model: unknown
Monitor Id:
Native Mode: unknown
Output Type: HD15
Driver Name: aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
Driver File Version: 8.17.0010.1047 (English)
Driver Version: 8.782.0.0

*bump* id like to find help with this because ive gone through every possible test i can think of when New Vegas is running it doesnt slow down my pc or use up a lot of the memory but still for the last few days it has kept lagging away i updated my drivers to the most uptodate ones there are and still its made no effect what so ever

Try this:

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

I downloaded that, follow the instructions.

I've had the exact same problem, my PC can run other games on High - Ultra but i seemed to have bad framerate on Fallout: NV so i downloaded that, added it to the Fallout folder and BAM... I havn't hadn't problem.

Thats NVIDIA

Ok but where would i find the folder for that when using steam ?

Either
Program Files/Steam/SteamApps/common/Fallout new vegas
or
Program Files (x86)/Steam/SteamApps/common/Fallout new vegas