LR/ACR's default chrominance noise reduction value of 25 causes color smearing and the loss of color detail and saturation. I've noticed this on several types of raws, including Sony A7s, Nikon D810, and Nikon D750. If I lower the chrominance NR slider from 25 to 5 these side effects go away without any visible increase in color noise. Perhaps Adobe would consider changing its default chrominance NR value for newer cameras/sensors? Here are some animated-GIF samples of a D7500 ISO 25,600 comparing a NR value of 25 to 5:
Are you aware that you can create your own individual camera defaults? Just set everything the way you want for each camera and then save new defaults for each one. You can even make the default settings ISO-specific and serial number-specific.
Yep, I'm aware of that, thanks. I was posting more for Adobe to reconsider their default NR in future versions as the default doesn't seem optimal for current generation cameras/sensors.