No problem specifically with Qt... System Settings is still silky-smooth under Mir demo servers:
mirrun system-settings So the issue seems to be localised to the Unity8 server/compositor. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1661072 Title: mir 0.26 - spinner loading animation, minimize, maximize too fast To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1661072/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs