After playing for a weekend, running a lot of the same apps and trying during the other times to use these devices as I normally would, I have the following observations that bother me (on 13.3 PR):
Note: These are my observations and no scientific instrument was harmed in the exercise.
12.9 IPP G2 - not seeing any real change between the beta and the PR. I use this device primarily for watching TV, reading, Netflix, and Youtube. It does appear to burn through the battery a bit faster.
11 IPP - Battery usage has seriously degraded compared to 13.2.3. Video seems to be the biggest issue. Use a Logitech SK. Even if the SK is turned off, the screen keyboard in the device will frequently not appear. Sometimes BT on/off will fix, other times a reboot is needed.
XS Max - Speed. It seriously sucks. The same app on all devices, the XS Max is left in the dust. Or mud. Wifi has become an issue. The device will randomly stop transmitting or receiving data. Swapping in / out of airplane fixes the issue till the next time.
Across all devices:
Mail - problems still continue to plague this OS for both iOS and iPadOS
RAM - Problems have come back. Not as bad as before, but the last fix has been undone.
Safari - in the IPP, not the XS Max, I am finding that some links will not work once I have been on the page for a while. A reload of the page fixes the issue until you have been ... on it for a while.
Settings > Passwords & Accounts: I have found that several entries are no longer there.
Messages: I forward messages from my XS Max to both iPads. The iPads do not always get all messages and the discrepancy is frequently different between the IPPs.
I may have to restore my XS Max.
More to come.