After much searching and each one saying something, I noticed that the Color Depth of Xbox One X in 8 bit generates color banding, in 10 bit SAY they lose color accuracy due to the limitation of HDMI 2.0 and 12 bit there is no panel with support . I swear I do not know which option to leave. I should choose between banding color (8bit) and less color accuracy (10bit).
"In nearly everyone’s posted X1X/S TV settings, 12-bit color depth is being used; however, this is the incorrect selection if your TV supports full 4K 600 MHz signals. When 12-bit color depth is selected in the system settings, it will force all video output to YCC 4:2:0. Likewise, selecting 10-bit color depth will force all output to YCC 4:2:2. You will lose color accuracy for SDR content.The proper setting for a 600 Mhz capable signal chain is to select 8-bit color depth. This will allow true RGB output, as SDR content is intended to be viewed in. 2160p 60Hz RGB 8-bit signals occupy the full 18-Gbps / 600 MHz bandwidth offered by HDMI 2.0 and compatible cables. This is the highest quality SDR output you can obtain with the HDMI 2.0 spec. The system output will still automatically switch to 10-bit YCC 4:2:2 or 12-bit YCC 4:2:0 color depth when HDR content is detected.
I know selecting the lower bit-depth may seem counter-intuitive, but this setting is really only used for the system menus and SDR content. I’ve spent many months evaluating and troubleshooting various 4K devices in attempts to obtain the highest quality video output. I have confirmed the issue with 12-bit forcing YCC 4:2:0 with an HDFury Vertex, and I can’t stress enough that 12-bit is the wrong selection to make with 4K signals on the X1X/S. Your system will enable 10/12 bit YCC modes when applicable HDR content is passed through.
Please keep in mind that not every 4K television and/or monitor utilizes 600 Mhz HDMI 2.0 ports, but if you know yours does, then 8-bit color depth is the correct setting for you.
In summary, use the 8-bit color depth setting for optimal color depth in SDR.
Side note regarding color space: The PC RGB color space option is intended to provide full range RGB 0-255, which you only want enabled if your TV is set to an RGB Full mode (labeling varies by TV manufacturer). In standard color space mode, the system will output RGB 16-235 (RGB Limited), when 8-bit color depth is selected. You will still get RGB Limited output with the standard color space enabled, which is what you typically want for most material."