This conversation has been merged. Please reference the main conversation: Lightroom Classic: Images not sharp unless I zoom in and out
So steps to produce this:
1. Load any shallow DOF image
2. Normal screen size, relative to the monitor is not sharp. It looks kind of soft with difficult to predict where the focal point is.
3. Zooming to 100% renders the image entirely and nicely. But it's a very slow process.
4. Zooming out and having full image on the screen is finally tack sharp.
It wasn't like that before. I remember LR rendering any screen size nicely and sharply even before going to 100%. So either they changed the rendering, some settings or it's a bug.