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L4D2 + crossfire

post #1 of 18
Thread Starter 
So I recently got a little back into playing L4D2 after getting a 2nd 6950 (11.5 drivers) ... with all details/filters completely maxed out it plays pretty smooth with frames usually in the 100's ... but I notice that during intense scenes such as a large fire with a huge body count my frames dip way down to 30-40 for that period of the scene and it gets choppy ... I remember when I had a single card it would play just fine even during those moments ... although the details AA/AF weren't completely maxed out like I have it now

Is L4D one of those games that doesn't prefer crossfire setup? I have multicore rendering off, tried it with vsync both on and off, but I haven't tried to reduce the AA/AF to see if that will have an effect.

Also, i don't have any CAPs installed, but I don't think any of them have L4D improvements listed.

Thanks!
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post #2 of 18
Hi,
I'm using a similar setup.
I'm using the Cap 11.6 cap1..
No probs here ,
You should give it a try

Btw , add me on steam (need some people to play L4D2 with ) username : xioros

Grtz

/xio out
   
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post #3 of 18
why is multicore rendering off?
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post #4 of 18
Thread Starter 
thx, will do! But what settings are you using in the game?
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post #5 of 18
Thread Starter 
Quote:
Originally Posted by .:hybrid:. View Post
why is multicore rendering off?

I heard its better to have it off for this game ..?
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post #6 of 18
I have a GTX580, and run everything at max and no problems.
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post #7 of 18
Quote:
Originally Posted by dezerteagle323 View Post
thx, will do! But what settings are you using in the game?
I think I'm running everything maxed ( note i'm getting 120 FPS in EYEFINITY)
Grtz
   
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post #8 of 18
Quote:
Originally Posted by dezerteagle323 View Post
I heard its better to have it off for this game ..?
Try it both on and off. It works a lot better when I have it on.
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post #9 of 18
Quote:
Originally Posted by PcKiller View Post
I have a GTX580, and run everything at max and no problems.
Since when is a GTX580 CrossFireX?

OP it runs fine for me. Try playing with Multicore Rendering as some others have suggested, or turning down your AA a little. I always find with Valve games, on my rig, that some of them don't like AA in CrossFireX much not that you should even be having that issue with 2 x 6950s.

Also install CAPs (which is your most likely reason). They're there for a reason. And yes they do support the Left 4 Dead series. they support Left 4 Dead 1, 2, and the DLC. Google it for proof.
Edited by Lifeshield - 6/21/11 at 11:45am
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post #10 of 18
I wouldn't think you'd notice a difference with crossfire. L4D is very easy to get high framerates in. sub 100 dollar cards can max it out without many problems.

Personally I'd try just doing triple buffered vsync and see if that gives you more stable fps. I used to just lock it around 250fps but decided to try triple buffered vsync and it feels just as responsive and i had less major fps dips than before with things like explosions.
    
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