Why? You can play DXV clips perfectly ok in Quicktime player ? (And if i'm informed correctly, you can play them in al quicktime supported players as well)
The only thing with DXV that Avenue is using your GPU for decoding... In other playersoftware it's just CPU decoding.
(correct me if i'm wrong or misunderstand the question)
desktop: Windows 7 home premium 64 bit, MSI 870A-G54, AMD Phenom II X4 955 Black Edition, 4Gb RAM (GVP34GB1600C9DC), NVidia GTX 560
laptop: Windows 7 home premium 32 bit, Core2duo 2Ghz, 4Gb Ram, NVidia 9600m GT