X3 user here.  How do I use Perfectspace?  I can bring it up in the Plugin FX menu, but I can't seem to get it to do anything. Appreciate any help.
 
John B.

You're probably not loading an impulse response file. That's the most frequent mistake new users make. PerfectSpace is a convolution effect, meaning it needs a reference file (IR file) to know how to modify the signal. Click on the little icon in the upper-left to choose an IR.

It asks me to load a wav file, so it needs an audio file that already exists.  I was hoping to use it to track vocals in real time while recording.
 
JB

The wav file it is referring to is an impulse response file. By default the files are in folders located in "C:\Program Files\Cakewalk\Vstplugins\Perfect Space." The plug-in is not asking for your audio file names. BTW, this is not a good choice of reverb for tracking, it adds quite a bit of latency.

It took me a while also to figure this out, but I decided it wasn't worth it. Sonitus is a better choice. but I just use some native reverb from whatever soft synth I'm using (Aria, Play etc), then send it all to East West Spaces. Which is an excellent reverb that does not cost an arm and a leg.

dont forget about rematrix solo in the PC. 

OK.  I followed the instructions and found out how to do this.  But as somebody said, the latency was too much to use for tracking.  I appreciate your enlightening me on how to use this, though.
 
JB

I think Perfect Space is very good, but I can't dream of recording with it real time with my my weak PC.
I don't think it's suited for that even on a more capable system. Add it in the mixing stage.
 

Although Perfect Space is a good convolution IR reverb it is not 64 bit nor is it true stereo. I recommend the Melda production Multiband Convolution reverb. It is 64 bits and is true stereo. Plus it will load any IR. Its also very reasonable in price.
 
I think its the best at that price. On sale its a no brainer.  https://www.meldaproducti.../MMultiBandConvolution

If you want to use reverb while tracking, your best bet is a hardware reverb unit that won't add any latency. You can pick up second-hand reverbs for 50 bucks. It doesn't even have to be a good one, because what's typically done is you monitor with the reverb but record the vocal dry and add reverb later, in the computer. That way you get the best of both worlds: a real-time effect to aid the singer plus the control and quality of software reverbs.
 
PerfectSpace is an excellent reverb for vocals, btw. The fact that it is not "true stereo" is irrelevant in that context.