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The Witcher 2 - SLI fix! (Guide) - Page 7

post #61 of 89
Quote:
Originally Posted by BallaTheFeared;13640590 
So yeah, the SLI fix works for me. I get 99% usage on both cards, however with the OPs settings (max) its getting close to the point where I'd call it unplayable for my pampered and spoiled self.

yea SLI fix works great on the usage, but start playing past that part, and ligh bleed EVERYWHERE, even outside. You can see multiple light orbs in the sky seeping through the trees, and even if you are behind a cliff. Its really annoying.

Great performance but annoying as hell. In some cases the light bleed is so bad i can't even tell whats going on in a cutscene during the day.
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post #62 of 89
Debbie downer frown.gif
    
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post #63 of 89
i have an interesting issue.
i installed the 275 beta drivers then try the SLI fix on this thread, but not change in low FPS (~20-30)
then i reinstalled the 270.61 whql driver and when i try to use nvidia instructor, the witcher 2 profile is gone, so i couldnt make the SLI fix.
am i have to use 275 beta drivers for this SLI fix?
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post #64 of 89
Odd that I have a Witcher 2 SLI profile already (270.61), but SLI doesn't work in the game. I get 99%/0%. I don't think I can ever recall it happening before where nV put out a SLI profile that just plain doesn't work headscratch.gif

Anyways, I'll try the SLI hack in this thread next, see if that fixes it and whether I have the terrible lighting problems some are having. I presume I'm supposed to just modify the existing profile, with the Comp Bits change only?
    
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post #65 of 89
you can creat you own SLI profile for witcher 2 with selecting "alternate frame rendering 2" which helps the lightning orb issues

http://www.slizone.com/page/slizone_appprofile.html
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post #66 of 89
Still going crazy about my FPS.. Tried some more, uninstalled graphics driver, have both tried the newest and the betas.
I use Fraps for checking FPS, my resoults:

on LOW settings:
FPS in:
Menu: around 1300 (?) Fps
Loading: stable 30 Fps
Ingame (first part where you are outside tent and soldiers prepare): 25-30 FPS, some seconds it can go above 30 for like 31 or 32FPS. When i slow down time though it goes up to like 40 as long as time is slowed.

On ULTRA settings (without ubersampling:
FPS in:
Menu: Stable at 120 FPS (my monitor fps)
Loading stable 30 Fps
Ingame (same area): around 25FPS

I just dont get why i only get about 5 FPS change going from LOW to ULTRA. Somethings is seriously wrong..

Also when i check GPU load in inspector it says 0%..

My specs again:
Graphic Card: 2 x Nvidia GeForce GTX 460 in Sli
Processor: Intel Core 2 Qyad CPU Q 9450 @ 2.66GXz (4 CPUs), 2,7Ghz
Memory: 4096MB Ram
DirectX Version: DirectX 11
post #67 of 89
Quote:
Originally Posted by Engin;13641006 
you can creat you own SLI profile for witcher 2 with selecting "alternate frame rendering 2" which helps the lightning orb issues

http://www.slizone.com/page/slizone_appprofile.html

Is there any finished profiles you can download? Where do you put them? Sorry im totally green at this confused.gif
post #68 of 89
Quote:
Originally Posted by mileafly;13634382 
I dont know whats wrong for me, i have tried to uninstall 3D vision drivers to get better FPS, and i GOT better FPS, but its still not over 30. And this is regardless of i having everything on LOW or ULTRA. with Ultra and ubersampling and everything, my FPS was around 15-25. With Ultra without ubersampling its around 25-30.

Then i run the game with LOW setting and its still not over 30 FPS?!

My specs are:
Graphic Card: 2X Nvidia GeForce GTX 460 in Sli
Processor: Intel Core 2 Qyad CPU Q 9450 @ 2.66GXz (4 CPUs), 2,7Ghz
Memory: 4096MB Ram
DirectX Version: DirectX 11

Did you try the instructions in OP, boosted my fps significantly
post #69 of 89
Quote:
Originally Posted by mileafly;13643761 
Is there any finished profiles you can download? Where do you put them? Sorry im totally green at this confused.gif

Follow the instructions at the top of this thread. They're really quite straightforward thumb.gif

Quote:
Originally Posted by Engin;13641006 
you can creat you own SLI profile for witcher 2 with selecting "alternate frame rendering 2" which helps the lightning orb issues

http://www.slizone.com/page/slizone_appprofile.html

While following the instructions in the slizone article + Engin's advice may cause SLI to 'work', it's definitely not the preferred method for creating an SLI profile for the vast majority of games, because it will not fill in the compatibility bits in the newly created profile.

The vast majority of games require that parameter of the SLI profile to be filled in, and filled in properly, in order for you to get the optimal SLI experience.

I recommend following the instructions at the top of this thread instead, using nV Inspector. Instructions which, if you follow them correctly, will automatically result in 'alternate frame rendering 2' being chosen for this game, because that's what's already in the SLI profile for this game that comes with 270.61 drivers.

BTW, kudos to the OP ... this solution works splendidly. I don't seem to be getting any graphical anomalies, and my GPU usage is nice and high.

I'm running the game completely maxed at 1920x1200 without ubersampling, and I don't think it's dropped below 60fps once (yet ... I did just start).
Edited by brettjv - 5/26/11 at 9:51am
    
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post #70 of 89
Yeah I tried turning off DOF in all areas instead of Ubersampling and it made almost no difference in FPS.

I'm going to try forcing 16xQ CSAA once with DOF on but ubersampling off to see if I can get some sort of AA into the game without the huge performance hit.
    
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