Whenever a cutscene plays during a game the audio is always lagging the video. The most recent one and the one that it happened the worst in was the demo for Devil May Cry 4.
I have a MSI motherboard, Intel q6600, geforce 8800GT. Iam using the on board sound with latest drivers and latest video drivers.

Welcome to PCHF.

Is Devil May Cry 4 played over the internet?

No, all the games that Ive been having problems with the audio sync in cut scenes are single player not over the internet.

Try this...

Open your Device Manager
click on View ... Show hidden devices

Click on and Delete (with the Delete key) any devices that have a ? or ! in front of them.
If the Device Manager has an "Other" device category, open it and Delete any devices in the "Other" category.
Now, reboot.

The reboot will force Windows to refind the deleted devices and hopefully see them for what they are.
After rebooting, give Windows time to locate and properly install the deleted devices.

Go to the Device Manager and verify that all your devices are listed correctly.

That's weird there was only one thing that had a ! in front of it and I can't remember what it was called but I didn't recognize it and when I restarted it wasn't there anymore so everything is recognized by the system right. I played two games and tried looking for cut scenes and didn't notice any lag in the audio. So thx.