Some animation transitions are really slow
I'm havin trouble with some animation transitions like in calendar when turning pages in fullscreen and windowed modes, this one is terribly slow. When swapping between fullscreen apps sometimes lags as well as in mission control and I'm not even running too many apps, just iTunes, Safari and Mail. Notes is lagging too when in fullscreen.
I have a Mid 2010, 27" iMac with Core i5 2.8 GHz, 16 GB RAM, Radeon HD 5750 1024 MB. I don't think this is a "slow" configuration, this shouldn't be happening.
iMac, OS X Mountain Lion