I have the GH5 on preorder and I am checking YouTube often for sample videos.
I cannot figure out if the video below was already discussed, but it seems 10 bit video is way more noisy than 8 bit on the GH5, which I find unacceptable. And my opinion is that it cannot be because of the codec/compression, it's more than that.
I am looking at the video on a 4K screen but I am sure the problem is apparent on smaller resolutions too.
The original file (which is 8 bit) can be found here, it's linked in the description: https://drive.google.com/file/d/0B0YX2ibzpZ8VLWxiNHFFUkhLQTQ/view?usp=sharing&pageId=108428603654979960847
