Hi Jordan,
I took a look with Instruments at the Mac app you provided. Prior to pressing the Play button, is there any call done to the Wwise API ? What I can see first is that before loading the Unity scene, the app seems to leak a bit already (few hundreds of bytes mainly from libmono.0.dylib). Once the play button is pressed, the memory usage rises above the 1GB as you mentioned but I did not have to change the number of RTPC iterations to reach this usage amount, leaving the default value of 1 was sufficient. Anyways, after quitting the app, a leak of about 37MB is present, the rest is not leaked per se according to Instruments and seems to be destroyed properly at the end of the application .
As for the amount of memory used by the Mac app vs the Windows one, I will try to investigate but :
-Can you provide a code snippet (or better yet, your project or a relevant subset of it) of your script where you call the SetRTPC API ?
-Do you use any string conversion when calling the RTPC API (such as AKPLATFORM::AkMacConvertString that are platform specific in your code) ?
Thanks,
Arnaud