EXS 24 Logic Sampler Users Group

Hi All:

I've been having problems using EXS24 drums and piano lately (the Pop drum kit and Pop 
piano instruments that come with the program), and I'm hoping someone out there can 
point the way to a solution. 

When recording a basic drum part or piano part, using my controller keyboard for both 
instruments, in a not-very-complex song, things feel  very sluggish, to the point that it 
inhibits my playing. 

Furthermore, when playing the track back, I notice that the performance that was recorded 
is actually different ( and worse).

As an experiment, I tried stripping the song of everything but my drums and piano--all 
plug-ins, audio files, other virtual instruments, etc.--and then playing my parts again. 
This time, the feel on both instruments was fine, and the playback was identical to what I'd 
played in (though I got nasty digital fuzz if I used the sustain pedal too much). 

So my question is, what's  the best way to address this? I'm running L7 1.1 on a 1ghz 
AlBook with 1.5 MB RAM. Do I just need more horsepower from the CPU? I was looking into 
getting a node computer, but then discovered that you can't  offload EXS instances to a 
node. 

I feel like I should be able to run more than 2 EXS24s without choking my machine. Is 
there something I'm missing? 

thanks very much for all  your help! ~ mike b.