jtxx000 wrote:what exactly is typical VST performance, is that just the amount of cpu it takes up? why is the licensed version less?
'Typical VST performance' is what the 'VST Performance' meter displays in Cubase.
The commercial version is lower because (see the *) it allows for a variable latency setting. The Latency setting directly relates to the size of the FFT buffer and for a fixed length of IR, a larger buffer requires less FFTs per second. The reduction in CPU effort required to do less FFTs per second is greater than the additional CPU effort required to make an FFT on a larger buffer - so CPU is lower with larger latency. However, when delay compensation is switched on in your host, the latency is irrelevant and so you benefit from the lower CPU.
Please excuse the technical outburst - but you asked