I can also confirm that upgrading to the latest nvidia driver solves the issue. I can't believe I didn't think of checking that myself *smacks forehead* :)
** Changed in: compiz (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/776988 Title: alt+tab with static app switcher very slow (100% cpu) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs