Comp tech issue..

Hello to whoso ever finds time to read this,lol, but whats pissin me off is that i just recently built this pc not to long ago and it runs SL like crap..best recently i can get is 24 FPS mid lvl settings and i crash alot for some reason..i do have a couple issues with other games too..like some freeze up and i gotta alt tab out then back in and its back to norm..but SL is my main issue..just real bad fps..lag"of course" frequent crashes esp comeing out of mouselook.This was my actuall first build all drivers are up to date. Im just not sure what im missing and why i get poor performance. so here is my specs and im open to any ideas that could possible help me or opinions that could be messin me up. Anything is appreciated

Operating System: Windows Vista™ Ultimate 64bit (6.0, Build 6001) Service Pack 1 (6001.longhorn_rtm.080118-1840)
Language: English (Regional Setting: English)
System Manufacturer: System manufacturer
System Model: System Product Name
BIOS: Phoenix - AwardBIOS v6.00PG "mother board is a ASUS M2N32-SLI Premium Vista Edition AM2 NVIDIA nForce 590 SLI
Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 6400+ (2 CPUs), ~3.2GHz
Memory: 8190MB RAM
Page File: 1991MB used, 14571MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 10
DX Setup Parameters: Not found
DxDiag Version: 6.00.6001.18000 64bit Unicode
Power supply: APEVIA ICEBERG ATX-IB680W-BL ATX12V / EPS12V 680W

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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.

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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)

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Display Devices
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Card name: NVIDIA GeForce 8600 GT X2 sli
Manufacturer: NVIDIA
Chip type: GeForce 8600 GT
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0402&SUBSYS_C7503842&REV_A1
Display Memory: 2283 MB
Dedicated Memory: 237 MB
Shared Memory: 2046 MB
Current Mode: 1680 x 1050 (32 bit) (59Hz)
Monitor: ACER AL2216W
Driver Name: nvd3dum,nvd3dumx.dll,nvwgf2um,nvwgf2umx.dll
Driver Version: 7.15.0011.6932 (English)
DDI Version: 10

"Dedicated Memory: 237 MB
Shared Memory: 2046 MB"

I don't get that but Im no super tech...shouldn't those cards have dedicated 256k or 512k each? not sharing 2046 witch looks like something from an integrated intel GPU

I run Ultra with a bit of custom tweaks on the RC and get 25-35 FPS under 15 avs on a mainland sim draw distance 128

you should get at least that,

now mind you 24FPS is really good if there are a lot of AVs around or lots of lag on the sim your in...

yeah its bout 24fps in a grid with around 10-15 people. but it used to be actually better and i had a sudden drop in performance and cant pin point it. Question..does SL actually support SLi? or would enabling that mess it up some.

Welli do belive i got the prob located, just a bottle neck in the GC's..and had to shut off the UAC. and turn the sli off. found that the driver set 169.44 works well with SL too