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DiRT Showdown Global illumination DX11

post #1 of 12
8/22/12 at 1:10pm
Thread Starter 
It cannot be enabled in game, so I edited the config in my documents. After doing so, the global illumination said custom next to it, so it must be activated right? I then started a race and my fps plummeted to the 30's-40's on two 7970's!

Is this normal?
Thanks for the help!
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post #2 of 12
9/23/12 at 8:24pm
Yes I just ran the showdown benchmark with Global illumination enabled and highest settings on my GTX 670 1080p - and i'm getting like 25fps, the global illumination is a killer!
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post #3 of 12
9/24/12 at 5:37am
Thread Starter 
Thanks for the info!
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post #4 of 12
9/24/12 at 5:01pm
I know that this was already answered... but! Use the latest 12.8 Cap3. I was getting very bad performance with one card or both cards before. I would get like 49 average fps. Now with the caps, I get 91fps average with global illumination on and everything else ultra, plus 8xMSAA and 2560x1440 res. With it off I get 128fps average.

I know I'm using two cards, but you should at least be able to hit above 60 average with yours. thumb.gif

http://forums.guru3d.com/showthread.php?t=368596

It also applies to single cards, even though it's mostly made for CF.

Edit: OMG... apparently I can't read. You have 2 7970s! So this is even more beneficial than I first though. tongue.gif And your system is comparable to mine!
Edited by Derko1 - 9/24/12 at 5:13pm
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post #5 of 12
9/24/12 at 7:00pm
So I just HAD to look into this to make it work.

After doing some testing... it is VSync that is broken within the game. If I enable it, I get below 40fps in some areas. If I enable everything and turn VSync off, I can be at above 100fps... BUT! With TONS of stuttering. To fix the stuttering, you just need to limit the frame rate to 59 with something like MSI afterburner. Then it's perfectly smooth.

I personally hate the game, but I'm sure this may help you or others that are having issues with the game. smile.gif
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post #6 of 12
9/25/12 at 12:05pm
Thread Starter 
The issue is that global illunination does not work yet and they promised to patch it.
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post #7 of 12
9/25/12 at 2:08pm
Quote:
Originally Posted by BradleyW View Post

The issue is that global illunination does not work yet and they promised to patch it.

What do you mean it doesn't work? If I'm in game and turn it off and on I can clearly see a difference in the image as I toggle it.
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post #8 of 12
9/25/12 at 2:38pm
Thread Starter 
Quote:
Originally Posted by Derko1 View Post

What do you mean it doesn't work? If I'm in game and turn it off and on I can clearly see a difference in the image as I toggle it.
Performance wise. it is not coded to be rendered correctly....yet.
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post #9 of 12
9/25/12 at 3:37pm
ok... so I'm supposed to be losing less than 20 fps when enabling it? The performance hit to me seems reasonable... but if you say it doesn't work... then I guess it doesn't.... ????

Like I posted though... you should still be getting around 100fps average. Don't see the point of wanting more though. But to each his own I guess. thumb.gif
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post #10 of 12
9/25/12 at 3:41pm
Thread Starter 
Quote:
Originally Posted by Derko1 View Post

ok... so I'm supposed to be losing less than 20 fps when enabling it? The performance hit to me seems reasonable... but if you say it doesn't work... then I guess it doesn't.... ????
Like I posted though... you should still be getting around 100fps average. Don't see the point of wanting more though. But to each his own I guess. thumb.gif

No, when I enable it, I go from 150+ to around 30+, that is the issue. So I checked up on it and the issue is that it's not optimized yet. Unless they have fixed it by now?
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