As promised.:

[Engine]
CustomRenderingSettings=1
PerformancePlatform=3

[Gameplay]
HardQte=0

[Input]
KeyboardLayout=QWERTY

[MouseInput]
SensitivityX=0.5
SensitivityY=0.5
Smoothness=1

[Rendering]
AllowAntialias=1
AllowBloom=1
AllowBlur=1
AllowCutsceneDOF=1
AllowDOF=1
AllowDecals=1.0
AllowMotionBlur=1
AllowRain=1
AllowSSAO=1
AllowScatterDOF=1
AllowShafts=1
AllowSharpen=1
AllowVignette=1
AtlasTextureDownscale=0
DanglesLimiter=0
DetailTextureDownscale=0
FoliageDistanceScale=8.0
Fullscreen=1
MaxAtlasTextureSize=4096
MaxCubeShadowCount=1
MaxCubeShadowSize=256
MaxSpotShadowCount=3
MaxSpotShadowSize=512
MaxTextureSize=2048
MeshDistanceScale=8.0
ShadowQuality=3
ShadowedLights=3
TextureDownscale=0
TextureMemoryBudget=800
UberSampling=1
VSync=1

[Viewport]
Height=1200
Width=1600

I've got a Radeon 4870 that runs every other game I have at high settings so I was very disappointed when W2 failed to run well full screen even on low settings and it was largely the stuttering that many people have complained about. I resolved to not play the game until the issue was fixed. I could run in a 1600x1000 window but seeing my desktop behind the game blows.

So, I tried the settings above with no better luck. Then I went in search of a framerate limiter. I found FPS_Limiter in another forum and ran it at the default of 30 fps. WOW!!! I can now run W2 at 1600x1000 full screen with the settings above and zero stuttering where there was massive stuttering before. I have 1920x1200 monitor but that resolution with these settings brings the stuttering back. 1600x1000 looks almost as good and is smooth which is the most important thing to me.

I hope CDPR can solve this problem with a patch, but in the meantime, I'm a happy gamer again.

i also got performance issue and want to try the FPS_Limiter you mention. can i get the download links? i try to google but found dead links

Yup. I don't think that I mentioned. But, I am using FPS Limiter with my settings above.

I am running this game on Ultra ( no Uber) and do not have any problems.
I set it Ultra, turned off Uber and that's it.

My specs;

Win7 64 bit
AMD 7950 quad core CPU
5 gigs DDR3
Nvidia GT440

It's been said that my card wouldn't handle Ultra well but it does.
The only difference that I can see is it takes the load screen a couple of seconds longer than it did on high settings.

I honestly can not see that it is a game problem.
I can't say 100% but it looks as though most of the people with the biggest FPS/stuttering problem are either running an Intel processor, an ATI card or both.

This is where I found it.

http://www.neogaf.com/forum/showpost.php?p=27959259&postcount=1361

This may help you decide where the bottle neck is.

[url=]http://www.techspot.com/review/405-the-witcher-2-performance/page3.html[/url]
That is the ultra high test, you can get to the low settings test from there.

thx, download it. going to try this.

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wow... now my games run so smooth at high.
using fps_limiter and installed ati 11.b hot fix.
thx guys.

i'm running it with win 7
AMD Phenom II x4 955 3.2 GHz, 4 GB RAM, 4890 card.