To add to this, the recently released build of macOS 15.2 Beta 2 (24C5073e) doesn't seem to be the one to fix it despite what Apple states in the release notes (which claim it is fixed). From a brief test SwiftUI scrollviews still seem to stutter and lag as in previous builds.

@juraj , no offence, you're completely wrong. I am running 15.2 beta 3 on my system as well, and contrary to what the release notes say (which I what I presume was the basis of your reply), the issue is clearly still present simply scrolling through Settings, Tips and any other SwiftUI scrollview.

I knew I wasn't going crazy, still have the same issue on an M2 Air myself even on macOS 15.3 Beta 2 with SwiftUI views.