I just started shooting RAW (CR3) with a new camera (Canon 90D) and noticed some artifacts when developing from the Develop persona. The images are large (32 MP), so occasionally it takes half a second for the changes to propagate to the image. For example, I will modify the shadows/highlights and for half a second the image will scan (or pixelate) as the changes are applied. Sometimes when I do this I notice large, slightly discolored squares as if the effect wasn't completely applied. For an image of this size, the squares are probably around 500px to 1000px on each side. I can fix it by modifying the slider again, but when I actually press "Develop", the squares usually return. On one image I was able to remove it, but on another it had 3-4 of these discolored squares so I had to reopen it to make the changes in the Develop persona again. My graphics card is always up-to-date and I'm also using the latest version of Affinity Photo.