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.

@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.

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.