Isn’t a full HD resolution ( 1920 x 1080 ) almost four times less pixels than 4K ( 3840 x 2160 )? I think I understand that a higher bit depth gives me more information per pixel, resulting in for instance less banding, but I still expected my 1080p 10-bit video files to look very soft and literally low-res.
Our vision doesn’t scale linearly. 8k doesn’t look 4x better than 4k.
Try it on vr goggles though, that’s where you can better notice these differences.