When I purchased a new X58 motherboard, with 6 gigs of DDR3 and an ATI4850 video card, I purchased and installed Vista 64 ultimate mainly for picture and video editing and expected no problems with my old Fusion 3 HDTV card as 64 bit drivers
were available. It started out a bit jerky which surprised me but after a few Vista and ATI updates it now works fine. However Windows 7 RC 64 ultimate, which installed yesterday without any driver
disks, has even greater trouble with the Fusion display. Not only is it jerky with any decoder but the sound is broken up and distorted. All drivers have been checked and updated except for the NIC where the latest driver STILL needs to be rolled back.
It seems strange that a TV card which will play with really old CPUs, old operating systems, outdated video cards and little memory cannot play smoothly on a highish end system with the latest OS.