macOS 27 Mission Control freezes for ~1 second when switching Spaces, animation is missing
Hi everyone,
After updating to macOS 27.0 (Build 26A428), Mission Control/Spaces has become noticeably laggy on my MacBook Pro.
When I swipe up with three fingers to open Mission Control and click another Desktop Space or full-screen application at the top, the screen freezes for approximately 1 second and then immediately switches to the selected Space.
The normal Space transition animation is completely missing/skipped. It feels like macOS freezes for a moment and then simply "teleports" to the next Space.
Steps to reproduce:
1. Swipe up with three fingers to open Mission Control.
2. Click another Desktop Space/full-screen application.
3. Observe the transition.
Expected:
A smooth animated transition between Spaces.
Actual:
~1 second freeze/frame → instant switch → no transition animation.
I'm running:
MacBook Pro M5
macOS 27.0
Build 26A428
I've already restarted the Mac, restarted Dock, and checked Reduce Motion/animation settings. The issue persists.
Is anyone else experiencing this on macOS 27?