I’m having exactly the same experience as you, on the same device (14PM). Battery health is 99% on my device too. Got mine within a week of launch day. Only issue is one of the medical apps I use is glitchy under iOS 17, but that’s an issue for the developer to sort out.Beta 8 running perfectly on a release day iPhone 14 Pro Max as did betas 7, 6 and 5. As an aside my battery health is still at 99% - no drama.
Delighted with the performance of the iOS betas this year. Looking forward to final release so everyone can benefit from the autocorrect and autocomplete updates plus it would be great for everyone to be using the new sticker features.
9 out of 10 awarded to iOS 17 from me. It loses a point for not having a ‘big’ new feature but I’ll take the stability benefits instead any day.
I have a funny feeling that iOS 17 has improved my photos taken on the phone. The 14 Pro Max is now a really super camera 📸 That’s my main use really. The camera speed also seems a little better - happy days. Could be imagining the improvements of course but I don’t think so.