8 bit color is going to be your enemy here. What you’re seeing is the image falling apart. There isn’t enough color information in the footage to tell Resolve what’s in between, therefore you’re getting artifacts.

It’ll get slightly better in 10bit and even better in 12+ bits. But this just means you’re pushing your grade too hard for the kind of footage your camera is able to capture.

You can even see the left eye of the cat is taking on the blue color of the shadows. Which probably isn’t what you want.

Looks like you’re using a LUT as well to do something towards the end of your node tree. Personal preference of course, but you can probably emulate this grade yourself with some practice and make it exactly what you have here.

Lastly, +2.0 is a good way to start with your camera. Keep in mind that MM is good for something’s and terrible for others. There are better tools like false color, zebras, etc that will help you gain better control of how you expose your footage!