Back to that article about jank or stutters? I actually do see a very little bit of this, but mostly when unlocking the phone, when the AOD black screen lights up the wallpaper to show the full clock and it's about to unlock the phone, right there that black transition to the colored wallpaper and the clock changing from white in the AOD, to then the color clock, I do see some minor miscrostutters for a split second.
And just sometimes, very rarely, when closing an app and opening another, I might see super split second stutter.
My Wife still hasn't taken the smaller Pixel 8 yet, so I still play with it, and have it setup almsot identically to my 8 Pro, and the smaller 8 does not show that AOD lock screen to fade into unlocking, that minor jank I get on the 8 Pro is not there at all on the 8.
Now this is not a deal breaker or making me change my opinion on the Pixel 8 Pro whatsoever, I LOVE this phone, and know that in a patch or two this will get ironed out. But honest thoughts are, the smaller Pixel 8 just seems ever so slightly smoother for some odd reason, it's barely noticeable, the difference, but swiping through apps, opening and closing them, go into settings, and exit and fade out, etc... the Pixel 8 is just a tad smoother and more fluid than the 8 Pro, from what I see.