I'm finding it quicker and more responsive than Tahoe, but I've run into a couple bugs that vex me. None are super troublesome, but I notice them.

The biggest one is that moving application stacks in Mission Control no longer works. In Tahoe and prior systems, if you invoked Mission Control with the "group windows by application" option turned on, windows belonging to a given app were "stacked" under an icon for that application.

This allows the user to move ALL of an app's windows from one display to another, or from one Space (Mac virtual desktop) to another, without having to drag them one at a time.

This broke in GG. I'm sure it'll get fixed in the .1 release, but it's annoying for now.