I thought "oh it's just a guy on reddit stiring shit up" Then I saw the video and though "oh someone made a fake video and called the channel NVIDIA" then I checked the channel and it was legit. You can definitely hear high pitched speed up thug vocals. Not sure how though because even recorded at 30fps the animations would play out properly right, not half speed. So doubling a 30fps clip to 60fps in that case would result in not just sped up audio but sped up animation, because 30fps isn't half as fast as 60, it's the same speed just half the visual information.