Switching from a bayer to an x-trans sensor got me in this situation too. I tought there was something wrong , especially with my high iso images. I found that sharpening without using the 'detail' slider too much is the key. I rarely go up 10 on it. And I still get sharpen the image pretty good. When you open a raf files in lightroom or camera raw the slider is by default at 25 so it's more noticeable. And, most important, I got myself to stopped doing extreme ''pixel peeping'' Now I'm pretty happy with my pictures!