Going for another playthrough, and I noticed an odd problem with the hair of people. It's bouncing around, sort of. It only seems to happen when indoors, and was very noticeable during the conversation with Abigail. It also occurs with Geralt, roughly in his neck area. Looks very odd.

Have a GTX770 on the latest drivers.

The only solution i know for this problem is to disable SLI. Is the GTX770 a dual-GPU card? If so, try disabling one of the GPUs. You'll still have more than enough graphics power to run the game.

I hit printscreen a lot during these hours of play, but apparently none of them got saved. Dang :( The weirdest was the beard of the dwarves flying about the place like nobody's business.

The 770 has one GPU as far as I can tell, and I'm not running it in SLI (my mainboard doesn't support it either (MSI Z87 G-43)).

I have all settings on max, including AA and such, if that matters.

It's quite odd, because everything seems to work fine in normal gameplay, but as soon as you go into conversation mode, beard and hair start bouncing about the place. It's a bit frustrating because it takes you out of the "zone", so to speak.

Hmm. If it's only conversation / cutscenes, then maybe try toggling your Depth of Field setting (DOF). I had very low framerates in cutscenes until I did this. Don't know if it will help with your jumpy hair issue, but it's worth a shot. Some players report that they have to turn DOF on, others report turning it off, so just switch it from whatever setting you have now and see what happens.

I just fired up the game now to grab to screenshot for a support ticket that I just posted, but it oddly wasn't present when I talked to Vivaldi. I don't think it was there yesterday when I started playing either, although it did crop up at some point, and Vivaldi's beard was bouncing about violently. So it could be that something triggers it while playing.

Right now all settings are on max, including DoF, 16x AF and 4x AA. I'll try to change things around, beginning with DoF, when the issue pops up again, and see if that changes anything.

I get ~250fps when about to talk to Vivaldi in his house, which increases to ~340 in conversation mode. I did see much lower numbers than that yesterday in conversation mode, so I'll keep an eye on it and see if it's much lower when the bug occurs.

If you're having 100+ FPS you really should consider putting a limit on your GPU. Those wasted frames only cause heat and possibly unexpected behaviour in some games, like, say crazy physics for cloth and hair.

I'm only getting crazy framerates indoors; outdoors it's more normal. But I can see if it's possible to put on vsync in settings (didn't see it in-game).

Played for maybe half an hour, and Vivaldi's hair was suddenly bouncing again - not just in conversation mode though, it also happened when he was walking away after I had talked to him. Nuts! :(

Oh, great, the picture is too big. Sometimes these limitations on GOG really suck the elephant's nuts.

http://s21.postimg.org/4bs715xsn/witcher_2014_03_28_19_06_05_762.jpg

You can toggle V-sync settings in the Nvidia Control Panel (3D settings for witcher.exe)

I have the same problem with my GTX780 & I tried lots of things, but in the end I gave up.
The problem is more annoying the more time you spend on it, better just to say that's how it is & do your best to ignore it.

If you let the villagers kill Abigail, then you won't have to put up with her hair thing when you would otherwise meet her again.

There are instructions for Vsync in the Fixes To Common Problems sticky thread. If the Nvidia Control Panel doesn't work, you can download a tiny, free program to force Vsync for you. That's what I ended up doing.

Unfortunately it sounds like there is nothing to do with this problem :(

Managed to enable vsync via nvidia control panel though, so that was good. Don't exactly need 200+ fps :D