I experience exactly same problem and it happens with unity and normal classic ubuntu session. Lag happens after working a while, compiz --replace does give a temporary performance boost but not for long.
-- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/764330 Title: Move window annoying slow with compiz To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/764330/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : [email protected] Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp

