Nvidia SLI users try the Following

[WhiskeyBullets 0]

Per Nvidia 93.71 Release Notes you can try the following to see if this fixes SLI gaming issues.

When dealing with the Registry always create a restore point incase you have to roll back your computer.

V e r s i o n 9 3 . 7 1

There may be intermittent application compatibility issues with dual core CPUs.

If you experience this issue, first make sure you have downloaded and installed the dual core patches from your CPU manufacturer and from Microsoft.

The Microsoft knowledge base article is available at:http://

support.microsoft.com/?id=896256.

If you still experience problems you can attempt to work around these by toggling off NVIDIA’s multithread optimizations using the following

instructions:

1 Launch regedit and determine the current primary display card by looking in HKey_Local_Machine\Hardware\DeviceMap\Video

and note the GUID (global unique identifier assigned by Windows), which is the long string in brackets { } at the end of the entry ʺ\device\video0ʺ.

2 Look in

HKey_Local_Machine\SYSTEM\CurrentControlSet\Control\Video\{GUID}\0000

where {GUID} is the number derived from the previous step.

3 Open the ʺ0000ʺ directory and create a new DWORD called

OGL_ThreadControl and give it a value of 2.

This will disable multithreading in the driver for all OpenGL applications.

4 If you want to disable driver multithreading for all Direct3D applications–

In the same ʺ0000ʺ directory, create a new DWORD called

WTD_EXECMODEL and give it a value of 0.

Let me know if you have any issues

[van Nistelrooy 0]

I don't know how to determine my GUID: I have 5 "long string in brackets".

\Device\Video0

\Device\Video1

\Device\Video2

\Device\Video3

\Device\Video4