Thanks for the tips, dude:) The fps dips to around 25-30 when I´m in towns or I think any place with a lot of people. In other places I get about 35-50. For example, in the tavern of the dwarven town, it took a serious nosedive to 17-24-ish. I tried all of the things you said, and the fps is still low. But it doesn+t stutter like it used to. It runs more consistently than before. Still shit though, considering my hardware.
djlethal: I have pretty much the same setup as you have, and I'm running the game on Ultra with Ubersampling off @ 40-60 FPS.
Is it a specific area you're having trouble with? Or both, say, the forest and towns?
Does the performance decrease DURING gameplay? For example, you start out with 50 FPS and gradually get to 30, without alt-tabbing or restarting the game.
If I were you, I'd try the following things:
1) Uninstall and clean all traces of my video drivers (with Driver Sweeper e.g.)
2) Install a different version of drivers (I'm running 11.4 Catalyst, no problems)
3) Run a chkdsk on C: and game partition, then defragment.
4) Reinstall game from scratch (no mods, no DLC, no patch). DELETE .ini files in Documents/Witcher 2.
5) If game performance is acceptable, start installing patches 1 by 1. Add mods after.
Please take these 5 steps and check back after.
Other things that come to mind are Catalyst AI, mipmapping, forced AA possible settings.
Also, if everything else fails, you can just toy with the .ini to hunt for a "buggy" setting.
Hope it helps!