I realized some strange graphics performance issues on my work computer, which is a early 2015 Macbook Pro. I use a Thunderbolt display as an external screen.
Animated graphics seem to draw much slower on the native retina display than on the external screen, when plugged in. After some tests with bench() (mean value of 10 runs), I can tell how much worse it is on the retina.
Time in seconds for graphics tests with Thunderbolt display:
Time in seconds for graphics tests with Retina alone:
This behaviour is present on all the 5 Macbooks I tested. All of them have MATLAB 2015b installed. One of my colleagues still has 2015a on his computer, which has exactly the same hardware like mine and there the performance on the retina display is much better. What happened? Is this a known issue?