Hue. As we've come to expect from Canon, the 6D Mark II's hue accuracy is better than average when manual white balance is used (as it always is for these Imatest color accuracy results).

All AF timing measured with a Canon 50mm f/1.8 STM lens. Time to capture, after half-pressing and holding shutter button. In terms of the Canon 6D Mark ... Shutter lag using manual focus dropped ...