Division Video

I bought the X-T4 for my next movie because I can't live with banding anymore. I'm doing some tests now. I want to shoot in 2K 10-bit at 24 fps. But when making a sequence in Adobe Premiere there is always ugly banding. When I put 8 and 10 bit side by side I only see a thin color difference but the same banding. So what's the plot???????