Editing on PC with MC 5.0.3. Five HD videos that run between 2 and 6 minutes each. Look perfect in Avid. Export QT to desktop H.264, Best quality, 5000kbps, audio 44Ghz. Look perfect on desktop. (I find Sorenson too complex to use). Upload to Vimeo for client, following Vimeo guidelines, and the video stutters and lags. Desperate for solution so I don't