ATI Crossfire Issue

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<div class="IPBDescription">New dual vid card setup causes FPS drop.</div>So, I've been gaming with nVidia cards for a long time now. But my new setup is now dual ATI HD2600XTs in Crossfire mode. Half-life 2, Bioshock and F.E.A.R. all run great without hiccups. Yet, now when I play NS, my FPS drops considerably, right around 10-15 fps.

Here's my current setup:

CPU: AMD Athlon XP X2 6000+
Memory: 2 GB
Vid. Card: Dual ATI HD2600XT in Crossfire mode
HD: 200GB

Now, I know some games don't support Crossfire so I even tried disabling it. Still didn't help. I've tried setting the affinity of my CPU to 1 processor for the hl.exe process. No go. I even change ati_npatch to 0 and ati_subdiv to 0. Any other suggestions?

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Well, I guess I'll start by stating what things I've attempted to get this fixed.

First off, going into the latest Catalyst control panel and disable anything that says "Let the application choose." I did that and set my own anti-aliasing and anisotropic settings. Now NS runs a lot better. I still get some lag but I can't tell if it's the graphics card or if the map itself has issues.

Anyone else have suggestions?

KungFuDiscoMonkey

Are you running Vista or the 64bit XP ?

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<!--quoteo(post=1646545:date=Aug 30 2007, 03:47 PM:name=KungFuDiscoMonkey)--><div class='quotetop'>QUOTE(KungFuDiscoMonkey @ Aug 30 2007, 03:47 PM) <a href="index.php?act=findpost&pid=1646545"><{POST_SNAPBACK}></a></div><div class='quotemain'><!--quotec-->Are you running Vista or the 64bit XP ?<!--QuoteEnd--></div><!--QuoteEEnd-->


I'm running WinXP 64-bit. I turned off gamma ramp if that's what you were going to suggest.