it is such a great product when it works (iPhone 16 Pro Max) - but its been very inconsistent for me. I've had Beta 1 installed since day 1 and obviously expect quite a large amount of bugs. However, as we get closer to the final release, I find it is still choppy when opening Messages and typing fairly quickly. Feels like it lags behind and plays catchup when I am typing on different occasions. There are a few other bugs and apps that dont play nice but when it comes to something like typing - that is absolutely an area that needs to be polished considering there aren't many iPhone users across the world that aren't typing. To be this far down the rabbit hole, weeks away from release, I felt like iOS26 would be far more polished by now. I guess we will see what changes between now and the RC release!
iPadOS26 Beta 9 seems to be okay - that has been far more buggy for me overall since the original beta release. However, as of yesterday, so far so good with Beta 9 (iPad Pro -13' M4).