Hi. I have created some wedding photos (jpegs high quality large size circa 10mb) in photoshop/bridge/camera raw. they look fine in bridge. I copied to usb and gave to couple and they complained that quality reduces in windows 10 photo app. I checked on my computer and sane things happens. If I load photo up in photo app it is clear for a few seconds and then adjusts to being pixelated and fuzzy. particularly bad on patterned clothing. If in slideshow mode they are all fine. If I right click an press edit it auto adjusts and is fine and I can save a good copy . I have a windows 7 laptop and they work fine in that viewer.
Can anyone advise what the problem is please. many thanks. Phil