[melloj]

Thanks for your answer. All my drivers are up to date and I trashed the pref files I've done several reinstall repairs of both Pro Tools and Avid drivers. The Mbox 3 Pro has been buggy ever since I got it but I'm stuck with it for the time being. I don't know why but the Mbox 3 Pro seems to interfere with video codecs.

I refuse to believe Avid's official cause and remedy for this error. There is no way Pro Tools is draining my computing power, we are not in the age of windows XP anymore. My PC can run 3D graphics and video editing software comfortably. It should run Pro Tools without breaking a sweat.