so I have quite a bit of experience with great picture quality with excellent black levels.

But as it is, the full backlighting with local dimming on the XBR75X940D is nothing short of amazing, and watching 4K OLED demo material on this makes for the most amazing inky black levels I have ever seen on any non-OLED set, while maintaining a contrast ratio that can still deliver more vivid colors and detail in shadows than OLED, which makes this set look far better than OLED in my opinion

The issue is the high levels of smearing/ghosting

Once calibrated it has perfect grayscale, and near perfect black levels, the best I've ever seen with an LCD TV that isn't OLED

The first level support tech was unable to help.