The game's running alright most of the time, it's pretty much playable at medium for me, but as soon as I got to the first animated cutscene it's really jerky, and most annoying the sound seems to jerk as well. This hasn't happened anywhere else in the game, any ideas?

Happened to me as well, mainly with sound. I've reduced sound acceleration and I'm waiting for the next cutscene to se if it helped.

I had to disable DOF in all three areas (cinematic, gameplay and cutscenes) to get smooth FPS all over.

How do you reduce sound acceleration?

Start->Run-> "dxdiag" in XP

Anyway what TigerLord is suggesting makes more sense. Thank you!

I've tried the DOF thing, it makes it slightly more watchable, though still destroys the immersion, and I can't reduce sound acceleration that way in silly silly vista

I have the same problem (cracking sound in cutscene). So i try to reduced sound acc. in dxdiag this solution work for me.

Here is another solution that also work for me. Update your audio/sound card driver.

Updated sound drivers still no fix

Why would audio acceleration be the cause for all this mess

Why is it happening to only a few people????

Goddamn i'm pissed. I can't play this game this way.....

Are you running an Nvidia card? Did you read the stciky about the 3D Visian and the beta drivers? My friend had the same issue( Gameplay mostly ok, but cut scenes were a slideshow) until he uninstalled the 3D Vision driver and installed those beta drivers. Fixed him right up.

yes yes i did all that

beta drivers 275.27, no 3d vision, updated sound drivers

The game just doesn't work after I play 30 or so minutes. Cutscenes become a choppy cracking mess of audio and framerate.

When I restart the game, the same cutscenes run just fine, but then after 30 minutes of playing the cutscenes and dialog start to mess up again.

I'm playing on ultra 1920x1080 with ubersampling disabled

Something else is going on with your system. What is your power supply? Do you monitor temps?

here we go again:

specs:

q6600 2.4ghz oc'ed @ 2.8ghz (temps: 40c idle, 66c heavy gaming)
6gb ddr2 ram
1 TB HDD 7200rpm
geforce gtx 560ti (primary)
geforce gtx 260 (physics card)

I've tested crysis 2, da2, mafia 2, metro 2033. Giving each game 30-45 minute play

Heck I played mafia 2 with physics on for 2 or so hours. Not a single problem. Not in any game I've owned.

I beat all those games on the same exact system that I'm using for witcher 2

It just can't be my pc.

I first thought it was, but it just isn't....

My powersupply is 750watt Corsair TX
http://www.newegg.com/Product/Product.aspx?Item=N82E16811129021

I'm using an antec 900 black steel case

200mm TriCool fan on the top, two 120mm front blue LED fans, one 120mm rear fan

So I'm definitely keeping my system cool

Hmm. It is curious that it happens after about 30 minutes in. Points to either heat build up or a stressed system overall.

This happened to me when i had crossfire enabled turned it off and everything is smooth as butter.