Its hard to believe but I discovered that the exs does work better on 1 core than on 8 cores.
Step 1: I use an 8 core Mac Pro (early 2008) with OS X 10.5.3 and Logic 8.0.2. With the Software MacPilot 3.0.4 I've deactivated 7 cores. After a newstart the mac pro runs only with 1 core
Step 2: That fact that only 1 core is active is represented in logics intern performance window and the os x Activity Monitor. The real bummer is that I can achieve to run stable much more multitimbral voices of EXS than I can with 8 cores active. Ahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh hhhhhhhhhhhhhhh !
On the other hand: When I run a song with 8 cores active the logic Intern performance shows great activity on all 8 cores while the activity monitor shows only 103 % and the CPU-Meters show low activity. That seems a contradiction but confirms tha BAD use of 8 cores:
This phenomenon has been succsessfully replicated by other users. Go ahaed and try by yourselfe ! You won't like what you see
Frustrating isn't it !?