Hi, this file was shared on MEP forum (challenge to blur faces), i wanted to see how Vegas & Mocha Pro would deal with it, rather than the tedious task of manually moving/keyframing the mask,

the other day this file played no prob in Vegas but now doesn't, it's got black intermittent frames, stalls/delays Vegas's response, the only thing that's changed since then is a GPU driver update 516.59,

like i say nothing has changed on my pc or Vegas apart from the driver but i've tried all the legacy I/O options, cleaned PC, redownloaded the file, deleted Vegas AppData, proxy doesn't help,...

to me it looks like a fairly ordinary file, 4k 50fps & it played no prob the other day,🤷‍♂️

Here's the file if someone could try it, https://drive.google.com/file/d/12IG4QV6xurBpp8RkMoqHS-klucdWZWov/view ( This link will will disappear tomorrow evening simply because the owner has other stuff he has to deliver to other people, & is not for general usage and not a free to use for other purposes)

Thanks

PS turning Off GPU in Preferences - Video & File I/O lets the video play ok 😒🤷‍♂️