Me too. Have you found a fix for it? Mine has been chewing up over 80 per cent for the past six weeks or so (since I did the update). I’ve taken it into the Apple store twice and they just say it’s because of the amount of photos I have on there and the slow speed of internet in Australia. Yeah, right. It just keeps draining even after I can see all my photos are downloaded. They are already optimised, etc. I’ve had to keep my phone in low battery mode to get more than an hour out of it (my battery health is fine by the way - over 85 per cent). No issues prior to the update. Have logged out of iCloud a number of times and redownloaded the photos, but it just keeps telling me it is using around 80 per cent of my battery life in the background. My partner who has the same phone uses his photo app more than me and his says around 2 per cent. It is driving me nuts. Apple should provide an option to turn off background activity for photos like it does with other apps.