I was sick of liquid glass and just went back to iOS 18.6 on my iPhone 16 Pro Max last night. I can immediately see the animation speed when scrolling is faster now, but there was zero stutter on the 26 betas. It was just a slower animation. But it did exactly what I was telling the phone to do and never felt jerky. But now on 18.6 I can scroll like lightning. I think some people are just very sensitive to this change and calling everything stutter as a blanket term. I am sure some people have performance issues since it is a beta, but it's really just a change in speed as far as my eyes can tell.