Why does The Witcher 2 run so Choppy

the-witcher-2

I have read through a couple of these forums discussing lag issues with W2; all of which seem to be running of questionable systems performance wise. 

My rig is running:
Windows 7
16GB RAM
2600K-i7 Overclock :4.6Ghz 
GeForce GTX 560 Ti in SLI x2 (2GB each)
Acer GD235HZbid Widescreen 23.6" 3D LCD Display(three of these)
ASUS P8Z68 Deluxe MB

Id like to also say that I only run this game on one screen; not spanned across three.

I would consider my computer high-end and this game is defiantly not new. Whats really strange is that I don't really notice a performance difference between when I have the game running on one video card or both! So its seems that the obvious answer is that the graphics engine this game rolls with is horrible. So what element or combination of elements in the graphics engine are recipe for this choppy heart ache. From what I have played so far the game is loads of fun; but this lag is ruining my experience. ALSO NOTE: I have the latest drivers from nvidia and the most recent update for this game. Any insight as to what the spec issues are here would be greatly appreciated! I am really interested in why this graphics engine is such a flop and what aspects made it this way.
Thanks for reading my post and thanks for any help you can present to this issue!

Best Answer

Witcher 2 is not optimized as it should be by default,then the new crossfire/SLI technology is known to make performance issues simply by bugging drivers/game engine especially in older games.

So having up to date drivers and game is a must.

Other than you are left only with tweaking the user.ini file in witcher and making it read-only.

Here are the values and more information.

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