David -
I also experience the problem you are having with Acoustic Mirror.
Even in a project with one stereo audio file using acoustic mirror on
one spot, using an envelope, I get very unstable and slow
usability... I've emailed them about this. It's too bad because it's
the best reverb...
I agree about the Noise Gate and the "default" track FX.
I think that bypassed or muted Bus FX are still using power because
with the Acoustic Mirror in there, I still notice problems when
muted...

hope this helps..

David wrote:
>>Somehow, I accidentally sent my last post before
>>finishing...
>>
>>Let's see...errr...I think I left off with the Trim Window
>>suggestion...
>>
>>And, one other feature suggestion:
>>
>>4) Customizable hotkeys for various functions, stored in a
>>user setup file.
>>
>>
>>Here are some operational questions:
>>
>>1) Is there a way to dictate the default track effects that
>>are automatically included when a track is added? If not,
>>might I suggest a function for this (i.e. build the channel
>>strips as a global attribute). At the very least, it would
>>seem that a "track noise gate" would be better left as a
>>track effect to be added, instead of as a defualt plug-
>>in...It seems a useless waste of DSP for a digital editor
>>(IMHO).
>>
>>2) Does anyone else experience a SEVERE reduction in
>>overall stability with Acoustic Mirror inserted as a buss
>>effect? I crash frequently when using this plug-in (on a
>>PIII 733 Cu with 256MB of RAM).
>>
>>
>>3) If a track or buss effect is "bypassed" but still in
>>the chain, is it still absorbing CPU?
>>
>>Thanks in advance for answers to my questions and
>>consideration of these feature additions.
>>
>>Congrats on this product. I look forward to learning more
>>about it with more seat time.
>>
>>David