First use of Photo AI on a shot of a Swainson’s Hawk taken from very far away and severely cropped. Original needed denoise and sharpening. Photo upscaled it and processed the changes, giving me a great portrait. Images here are downsized for web.
This is the original.
And after processing…
If you’re running into a similar result with your images, it’s possible that Remove Noise is removing some detail. You can adjust the strength slider to refine and preserve the sharpness.