When you go to sharpen your image, change the resolution to 300 percent so you can clearly see what you are doing.
Then sharpen the photo (Filter>Sharpen>Smart Sharpen).
Choose less than 2 for the Radius and then play with the Amount until you see some improvement.
All we can hope for is that the people at Adobe really work hard to get this working better.
The sharpest image you’ll get at full resolution (100%) is still blurred and noisy.by