Bad uniformity. My G5 is by far the best I've ever seen on any oled.
Try the 5% - 10% grayscale files: https://drive.google.com/drive/u/1/fold ... 2ZGhSXZk_D
On the C2 I see two large vertical bars in all the dark scenes and even on the grey menu when the ugoos boot. That is very annoying.
Also, I checked the DV 10% grayscale again on my C2, and the falling diagonal lines are also there, only in DV but less obvious than on the G5. So, LG TV does more dithering in DV than in HDR10, which explains why DV has no banding and HDR10 has some.