Emulator

try to disable "Enable CPU -> EFB access" in Direct3d9 plugin, it worked for me.

http://code.google.com/p/dolphin-emu/issues/detail?id=3463&can=7

There's a reason the issue was closed, don't keep opening duplicate issues.

It makes sense since Mac is not a gaming platform and has poor driver support. The Mac and Linux versions of Dolphin are a WIP (even more so than the Windows versions), both compatibility and performance are way behind Windows. So it's advised that everyone uses the Windows builds for right now if they want to play games using the emulator.

Dolphin was originally Windows only, Linux and Mac versions don't see as much progress because there aren't as many Linux/Mac developers as there are Windows developers so the Linux/Mac builds don't receive as much attention.

You also didn't provide an in depth explanation of the issue, just typed that it was running slow after battles. You should provide an in depth description of the issue, all settings used, builds and revisions tested, system specification, OS and OS version, drivers etc..

ymaf, please uncheck "Enable CPU -> EFB access" in r6422 or later and see if this fixes the slowness on MacOSX.