The firmware sharpening is through the roof, causing halos and losing detail (sharpening crushes blacks and blows out highlights).
I’m guessing you’re doing that for impact for the casual user, but I believe same casual users won’t notice the difference if you flatten the image a little in this area. And advanced users will praise the higher detail this great lens and sensor can provide.
Consider putting this intense sharpening into a post processing filter. Thanks!