hi,
I have a big problem,
I created a scene not very complicated, when you export for Mac (Intel) is jerky and slow!,
when exported to mac universal, equal, even when exported to other mac and ppc …!!,
if I open the project on pc, all ok!
there are special settings for mac? I have a mac and a pc vaio.
thanks
heeeeelllp! please
The build settings for Windows and MacOSX are the same, so you shouldn’t need to set anything yourself to get good performance on the Mac. However, you haven’t given much information about the specs of the computers you are using or about what is happening in the scene. For example, some Macs have relatively slow onboard GPUs that will show a big difference with some scenes.
Unfortunately OpenGL on OSX is much slower than DirectX on Windows, so you will almost always get a higher frame rate on Windows for otherwise similar hardware.
Even if you think your scene is simple, you may have an excessive number of draw calls or a very high poly count. So check the statistics in the Game view in the editor.
Unsure if OpenGL is slower … I was always under the impression that Apples unbeatable capability to trash drivers on a level competing with ATI was the reason for it.
They should hire NVIDIA engineers to write them drivers that for once work and not touch them till Lion 
OpenGL is lagging somewhat on Mac, OpenGL 4 is almost as fast as DirectX 11, but Apple has yet to get beyond OpenGL 3. For an … “terse” discussion of the topic, have a look at the Ars Technica article (they talk about 3D graphics starting near the bottom of the first page… be warned the author was not in a kind mood when he wrote the piece):
driver conversation aside 
Cheers,
Galen
Thanks to all, I understand, to slow down the scene were the reflections on the glass material, if I remove the transparencies with reflection, everything ok
sorry for my english, I use google translate