This problem affects me too, and makes the alt-tab switcher almost unusable. Sometimes there's over a second of delay.
Using the nvidia binary driver with this chip on a thinkpad: 01:00.0 VGA compatible controller: NVIDIA Corporation G84M [Quadro FX 570M] (rev a1) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/912756 Title: alt-tab switcher is extremely slow To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/912756/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
